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post #1 of (permalink) Old 11-13-2002, 05:27 PM Thread Starter
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Tach cluster

I just installed a used tach cluster into my 88 daily driver.
The only thing not working is the temp gauge.
The sender is ok because the other cluster that was in the same zuke worked fine.

I did the lightbulb test that the FSM suggests, and the Gauge passes with flying colors.

Since the test is done at the sender end of the wire, and the gauge passes the test, I suspect that the wire and connectors are fine.

Does the sender have to match the gauge year for year?
I wouldn't think so.

Also, On the back of the tach cluster, there are two plugs, Three wires that go to the ECM reset switch, and the speedo cable.
There is one more black wire that is screwed to a contact on the circuit board. On the other end of this same wire is a spade type plug in a plastic guard. What does this wire go to?
I have checked for voltage with the key in the off position and there is none.-----With the key in the run position, The voltage varies from .2 to 11 volts.
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post #2 of (permalink) Old 11-13-2002, 07:52 PM Thread Starter
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Re: Tach cluster

ttt
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post #3 of (permalink) Old 11-13-2002, 10:56 PM Thread Starter
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Re: Tach cluster

c'mon guys--
39 views of this post and no answers.
Someone out there must know.
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post #4 of (permalink) Old 11-14-2002, 06:24 AM
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Re: Tach cluster

I put a tach cluster in my '88 not too long ago. There were two plugs, three wires (for the reset switch), and a buzzer (which I removed). There was no extra black wire on mine. However, there was a fair amount of corrosion on the flexible circuit board. (Apparently the thing had gotten wet.) I removed all of the light bulbs and nuts from the threaded posts, cleaned all of the contact areas with a small wire brush and a pencil eraser, then reassembled everything with a dab of vaseline on the contact areas. Everything worked! You might want to check yours for corrosion, and also check your firewall and engine grounds (especially the one at the thermostat housing). HTH
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post #5 of (permalink) Old 11-14-2002, 07:01 AM
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Re: Tach cluster

I've got that same wire hanging loose on my '88 and all guages work fine. I have always assumed it was a ground wire.
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