Brake Warn Lamp Wires

[pjmoreland]

Originally Posted by Ppardini

I should've been more specific, yes these are tan wires and they are original cut and spliced off the original instrument cluster harness onto the painless wires. I took one of the tan wires and wired it to one of the small brown wires on the ignition switch the other small brown wire from ignition is wired to the master cylinder, the brake warn lamp works correctly, lights up when cranking the engine. Also the instrument cluster harness does have the black wire that runs to the alternator so I think I've got the voltage gauge connected correctly. So far so good no fires and no blown fuses. In hindsight I definitely should've paid more attention when I snipped all the wires off the original instrument cluster harness and followed where they went, I did not forsee a phantom extra wire.

So did your original harness have a total of three tan wires going to the gauge cluster connector? Normally there are just two (to two separate pins), and the second one is for the fuel gauge.

I'm not familiar with how the fuel gauge is wired on trucks with dual tanks, but I'm wondering if the extra tan wire could be for a connection to a second tank. Just a thought.