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Originally Posted by actuary67
Hi,
I recently purchased a 92 ZR-1 , and some of the lights on the dash do not work ( behind the radio, climate control, and user info center).
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The back lighting for the devices you mention are controlled by the Incandescent Power Driver.
It's a transistor mounted on a large heat sink and bolted to a bracket on the left side of the steering column around the middle of it. It has a 4 pin white Molex connector going to it. Only 3 of the pins are used.
To see if the module is bad, unplug the connector and and at the connector short the Brown wire to the Dark Green wire. Turn the headlight switch on and the back lighting for the devices you mention should be at full brightness.