'87 R65 instrument cluster wiring

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r75boxer
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'87 R65 instrument cluster wiring

Postby r75boxer » Tue Feb 04, 2020 10:29 pm

Hello all. I'm making great progress on returning my R65 to OEM after a previous owner attempted to make a GS out of it. Wiring is pretty much cleaned up save for the instrument cluster. Does anyone have a diagram describing the 12 pins in the instrument cluster socket? Mine, as you can see in the image, was cut (and quite short). I'd like to use another 'female' end with longer wires and want to get the orientation correct - this may not be possible though ](*,). The spare that I have does not have the same male/female connectors - that is, the donor plug has pin 9 and 11 blank, whereas the original has 1 and 9 blank.

Kevin
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'02 R1150RS
'87 R65
'71 R75/5
'58 R26
'51 R67

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Rob Frankhamr
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Re: '87 R65 instrument cluster wiring

Postby Rob Frankhamr » Tue Feb 04, 2020 11:58 pm

It'll be from a different year or model, there are several different terminal layouts. Some time ago I sat down and worked them all out, attached is a .pdf file is what I found. I think it's about right...
connactions.pdf
The older Haynes manuals actually show the terminal numbers.

Rob
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Re: '87 R65 instrument cluster wiring

Postby windmill john » Wed Feb 05, 2020 7:04 am

File says it’s corrupted Rob... and not just the spelling :wink:

I’ll try on my PC later.
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Re: '87 R65 instrument cluster wiring

Postby Mjolinor » Wed Feb 05, 2020 9:29 am

Worked OK for me.

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Re: '87 R65 instrument cluster wiring

Postby windmill john » Wed Feb 05, 2020 10:08 am

Works for me now I'm on a PC.

It either didn't work on my iPad, or....................... Rob rushed and fixed it :grin:
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Best roads: 623 Burgos to Santander. A back road to Metz; can't remember which!
Ari, my 500 Classic
Bumble, my 700 Transalp.
Gupta, my 350 Bullet.
Sold my Airheads, what an idiot.
Too many bikes have come and gone, trying to be sensible now!

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Re: '87 R65 instrument cluster wiring

Postby Rob Frankhamr » Wed Feb 05, 2020 10:35 am

I've done nothing since I posted it, I think it must be an 'apple' thing. I've attached it as a jpeg so everyone can see it... hopefully
connections(1).jpg
Incidentally, it's not a cheap fix but I know that replacement plugs with decent length flying leads are available. All positions in the plug are connected so one plug fits all and all you need to do is make sure the right wires are spliced. I've never used one but I have tried to 'butcher' an original to repair it and it's nowhere near as easy as you might think. My attempt was sort of succesful but it didn't prove to be reliable and I suspect it wouldn't have been waterproof. Fortunately I was able to source a replacement with the correct configuration from a spare loom.

Don't know if these are available in the US but I think Motorworks will export.

https://www.motorworks.co.uk/vlive/Shop ... 5_20_IA_60

Rob
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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Wed Feb 05, 2020 2:14 pm

Thanks very much Rob. That's exactly what I was looking for. I'll let you know how I make out.

Kevin
'02 R1150RS
'87 R65
'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Wed Feb 05, 2020 3:01 pm

So, it appears that the donor plug is from a /7 according to Rob's table. I wonder whether I could splice together the indicator wires on the donor loom to both feed into 5 on the plug and leave 1 empty.

Kevin
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Re: '87 R65 instrument cluster wiring

Postby Rob Frankhamr » Wed Feb 05, 2020 6:14 pm

You can't just splice the wires together, that would effectively connect right and left indicators together so they'd all flash at the same time... well they wouldn't of course because it would probably burn out the flasher relay. What you could do is splice a diode into each of the indicator wires to stop the current going from left to right.

Not sure how well you're up with electickery so forgive if I'm teaching grandma...

A diode is a one way valve for electricity, here is a description of the wiring.

Obtain two diodes. These will be like black cylinders with a silver or white band at one end. If you buy them from an electronics supplier, go for a 1N4002, 1N4003, 1N4004 type or similar.

Find the Blue/Red wire and the Blue/Black wire in the loom. securely solder a diode to each one. The solder connection MUST be to the wire from the end of the diode without the silver band. Insulate these connections preferably using heat shrink tube. Twist together the wires from the silver band end of both diodes and solder the Black/Yellow indicator lead from the multiplug to them. Insulate this with heat shrink tubing. Rune some wider heat shrink tubing over the whole lot to support and fully insulate it.

When the Blue/Red wire goes positive, the current will flow through one diode and into the repeater bulb because that diode is forward biased but it can't flow back along the Blue/Black wire through the other diode which will be reverse biased... when the Blue/Black wire goes positive, the current will flow through one diode and into the repeater bulb because that diode is forward biased but it can't flow back along the Blue/Red wire through the other diode which will be reverse biased.

Yes, there's no problem with leaving pin 1 unconnected.

Hope that helps

Rob
Last edited by Rob Frankhamr on Wed Feb 05, 2020 9:26 pm, edited 1 time in total.
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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Wed Feb 05, 2020 6:57 pm

Thanks again and no, you aren't talking to grandma/grandpa. I am handy with the soldering gun though and will give that a try. I also happen to have a large collection of heat shrink tubing.

Kevin
'02 R1150RS
'87 R65
'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby John Marshall » Wed Feb 05, 2020 7:01 pm

Bit late of me just to say it worked OK in Mint.

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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Thu Feb 06, 2020 4:36 am

Rob, I got picked up some diodes but was only able to get 1N4007. The fellow said these would work as they are typically sold for automotive purposes. Would you agree?

Also, they only sold them in bunches of 100 so I now have a lifetime supply. The lot cost me $3.50 CDN.

Kevin
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'87 R65
'71 R75/5
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Re: '87 R65 instrument cluster wiring

Postby Rob Frankhamr » Thu Feb 06, 2020 11:17 am

Yes, they'll be fine. There are a whole series of diodes from 1N4001 to 1N4007. The only real difference in spec is the reverse voltage they are able to block before breaking down. The lowest value is 50 volts (1N4001) which seems more than adequate for automotive work but with some of the voltage spikes you get on our rather crude airhead electrical systems, is best avoided. I always use and recommend at least a 1N4002 (100 volts) but anything greater than that is fine. FWIW, the 1N4007 is rated at 1000 volts which does seem a bit OTT but it will work perfectly well... all of the other specification parameters are identical. In fact, I have sometimes wondered why they produce the range when one specification will do for all applications. There's not even any real difference in price.

It's quite normal for electronics suppliers to supply in quantites of 100 or more... at those prices, you can understand why. You can always advertise them on Ebay at 50 Cents and make a profit :wink:

I came across the attached diagram which I made some time ago which may help to clarify the instructions in my last post. It wasn't for exactly the same problem but, in practice, the solution is identical. (this was to allow the use of a 3 pin indicator relay in a machine with electrics designed for a 4 pin unit). In your use, I'd recommend soldering the diodes direct into the loom and not bothering with the spade connectors...
Indicator Pigtail.jpg
Good luck...

Rob
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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Thu Feb 06, 2020 1:00 pm

Thanks again Rob. I'll keep you posted. It may not happen till the weekend. Apparently I've got other items on my to-do list that need attention.

By the way, in my search for diagrams I came upon this one that shows the instrument cluster. The resolution isn't great but the numbers (pins on the cluster) line up with the list you provided me earlier.

Kevin
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'02 R1150RS
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'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby Rob Frankhamr » Thu Feb 06, 2020 1:08 pm

Whoa!!!

Mistake on my part... (or rather an ommision). Didn't think it through completely. Big apologies.

The wire you are connecting the combined ends of the diodes to will be the wire connecting to pin 5 on the multi plug. On your bike this will be blue/Black, not Black/white or black/yellow.

In order to provide a ground connection for the repeater bulb you also need to connect the wire connected to pin 11 (Blue/Red) to ground. This can be done quite simply by tying it into the brown wire in the loom.

Rob
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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Thu Feb 06, 2020 1:20 pm

No worries, thanks for the update.

Kevin
'02 R1150RS
'87 R65
'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Mon Feb 10, 2020 11:51 pm

As an update to my wiring retrofit, see attached image. I managed to get squat done on the weekend but did get an hour in the garage this morning. Three of the 12 wires are done. You'll see on the image that the middle one (my first soldering attempt) is a bit rough. The next two - black and brown-black much better. I'm leaving the diodes for last.

Kevin
soldering.jpg
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'51 R67

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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Thu Feb 13, 2020 9:26 pm

I completed the hookup today. Looks like everything is working as it should (although I haven't tried starting it but the starter kicks over) save for the left signal which is making lots of clicking sounds but doesn't lite up. The right signal is fine. The shrink tubing for the overall harness is not secure yet so I will check the left signal wiring again. Thanks again for all your help Rob.

Kevin
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'87 R65
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Re: '87 R65 instrument cluster wiring

Postby Rob Frankhamr » Fri Feb 14, 2020 11:13 am

Just trying to think iof what might cause that issue. The only thing I can think of at the moment is that one of the diodes is dodgy. It may seem a bit strange but that could be the diode in the good side as easily as that in the side that isn't working. You can test the diodes without undoing all your work. Disconnect the multi connector and make sure the indicator switch is in the middle. If your multimeter has a 'Diode test' setting, use that. If it doesn't, use the meter on the hignest Ohm range. Test between the terminals of each diode. A good diode should show infinite or very high resistance in one direction and a fairly low resistance in the other. The exact figures will depend on the meter model but the important thing is that the resistance is different dependant on which way you test the diode. You might also want to check that the diodes have been fitted the right way round. Both silver bands must be at the same end and that end must be towards the repeater lamp.

The only other possibility I can think of is a fault (short or open circuit) between the indicator switch and the new connections.

Hope it doesn't turn out too difficult to locate...

Rob
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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Fri Feb 14, 2020 3:51 pm

Thanks Rob. It's possible that when I put the shrink tubing on that diode I got too close to the diode. Anyway, that seems to be the only issue. The neutral indicator, lights, cluster lights, oil etc. are all behaving as they should with the engine not running. I'll let you know what I find.

Kevin
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'87 R65
'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Fri Feb 14, 2020 11:10 pm

It's all good. I checked that both bulbs had good contact (front and rear) and then took the relay out/in and all is good now. Must have been corrosion or a poor contact. Before that I did what you suggested and the diodes were both working as expected. So, I obviously didn't fry the left one.

Kevin
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'87 R65
'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby Rob Frankhamr » Sat Feb 15, 2020 12:00 am

Good to hear.

Rob
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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Tue Feb 18, 2020 5:54 pm

Rob, I spoke too soon. I was demonstrating my handiwork yesterday to a friend and, without all the bright led lights on in my garage, I noticed a very faint light coming from the right signals when the left signal was switched on. The same occurred when the right signal was turned on. Again, very faint while the intended signal was very bright.

I've gone back to the notes you sent and realized that I forgot to ground the blue/red coming from the bike harness (not the one from the cluster).

Kevin
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'02 R1150RS
'87 R65
'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Mon Mar 02, 2020 7:30 pm

As an update, under Rob's direction, I made a connection between the 11th and 12th (ground) pin on the instrument cluster floppy circuit board. The connections from the '87 R65 harness to the /7 connector plug were as described earlier complete with the two diodes connecting to the #5 pin.

The easiest route was to connect to the ground side of the two bulbs, one for the 11th pin and the larger (# 12) one for the ground. I used about 5 wires from a stranded wire and soldered the middle section to hold them together, then hammered the two ends flat and slid them into place (see picture). I then used a liquid insulator to isolate the wire b/w the two bulbs. Once assembled it worked!

Kevin
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'02 R1150RS
'87 R65
'71 R75/5
'58 R26
'51 R67

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Re: '87 R65 instrument cluster wiring

Postby r75boxer » Thu Jun 25, 2020 11:31 pm

Hello all. We'll the R65 is on the road. Quite a nice bike to ride and quite peppy. The only issue seems to be the lights.

When the ignition is on only the 'flash' works to turn on the headlight. Also, when the ignition is on the first click (park) both the headlight and rear light are on. Brake lights works. Any idea what could be going on?

Kevin
'02 R1150RS
'87 R65
'71 R75/5
'58 R26
'51 R67


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