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Old 02-23-2022, 11:18 PM   #9
gschroeder
Registered User
 
Join Date: Feb 2022
Location: Ottawa Ohio
Posts: 44
Re: Idiot Temp Light and Idiot Brake Light Not Working

pjmoreland,

Here are results from your recommended 4 steps:

1.) I confirmed there is 12V on the pink wire on the gauge cluster connector.

2.) I confirmed there is 12V on one side of the contact on the flexible circuit board for the bulb.

3.) I could not get 12 volt on multimeter between the ground terminal for the bulb on the circuit board, to the terminal on ignition switch that has two tan wires running to it. Not sure I did this right as I am not sure what you mean by continuity.

4) Sorry I could not understand how to do step 4. Specifically how to run/test the two tan wires for continuity. I understand how to disconnect the battery, turn ignition switch to the starting position,... but how do I test the two tan wires for ground to the metal of the dash? Use multimeter somehow?

I am not sure if this means anything but I was able to get the brake light to illuminate manually by running a ground from the ground terminal for the bulb on the circuit board to the cab. Does this simply mean my ignition switch is bad (not creating the ground for the brake light when cranking engine)? Thanks again for all your help. Thank you
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