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Old 07-20-2012, 11:06 PM   #1
Join Date: Jul 2012
Posts: 18
1993 YJ Dashboard Electric Problems?

I've been encountering some issues ever since I've purchased the Jeep, where the right signal status light (on the dashboard between the tach and speedometer) doesn't flash, or anything of the like, but I can hear the solenoid firing, and I can see that the signal is working. Does anyone know of any known problems with the YJ?

I've already dismantled the whole thing, and have replaced all the bulbs to save time down the line (I'm keeping the old ones as spares), but I'm wondering if the circuit board behind there would have corrosion issues and create an open circuit, preventing any electronic signal from getting to the bulb(s)?

I'll be spending some time tomorrow to take some photos of this issue, and see if I can diagnose any other issues regarding the non-functioning speedometer (the tachometer does work).

Thanks in advance,
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Old 07-21-2012, 07:33 AM   #2
Tyewilly's Avatar
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When my speedometer quit it was because one of the traces on that board was corroded. On mine, it was the power trace to the speedometer, so i just ran a jumper wire from the tach power lug to the speedo power lug. I think radio shack sells a high copper content paint for fixing broken traces on circuit boards that you can use to repair it also.

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Old 07-21-2012, 11:42 AM   #3
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Location: Ridgway, Pa.
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try using a test light or a multi-meter to test the socket for the bulb before you go tearing into that circuit board.

you might just need to clean or adjust the prongs inside the bulb socket.

if it is the circuit board, handle with kid gloves. it is a sensitive item, and will not take alot of abuse if any. Although it is replaceable, it is quite expensive. Last one i saw on ebay was 80 bucks for the one behind the 5 gauges and 130 for the one behind the speedo cluster.
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Old 07-22-2012, 10:13 PM   #4
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:/ Well, as far as I know (and from what I made the obvious mistake of), after taking the cluster out, there was a fair bit of corrosion on the circuit. Kind of made sense, but I'm also wondering if anyone knows if WD-40 would work as a good corrosion remover? Are there any other good methods that you may know of (aside from replacing the unit, or making a jump using copper wire, etc)?

Again, any help is greatly appreciated.

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Old 07-23-2012, 02:37 PM   #5
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Pencil eraser works wonders at cleaning the circuit traces. Just undo all the gauges and use the eraser to clean where each gauge connects. Don't rub real hard just enough to clean each contact and then put gauges back in.
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Old 07-24-2012, 09:01 PM   #6
90DesertTanYJ's Avatar
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Location: JAX, FL
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Ive been working on gauges and lighting on my 90. So far Ive gotten all the gauges and clock working, my blinkers and brights indicator but I am still having trouble with the gauge lighting. All of it can be hardwired with some patience.

Good luck!
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Old 07-25-2012, 12:07 AM   #7
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Location: Papillion, Nebraska
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If the back tail light doesn't flash but illuminates solid., then its your flasher. Which is located right below your driver side dash. Its silver and cylindrical. They're cheap, and a worthwhile purchase.

I just encountered this problem on my jeep, and this was the fix.
Best of luck!!
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Old 07-28-2012, 01:12 PM   #8
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Once again, thanks for the help. Will try the eraser trick later.
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Old 08-14-2012, 09:07 PM   #9
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Location: Denton, TX
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I have problem with my dash lights going completely off - when I smack the plastic it comes back on. Gauges and lights go off. I was told it is a ground wire somewhere. Have you considered that an issue - the ground wire.

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circuit board , dashboard , electric , jeep yj , problems

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