Transmission wiring harness, 4 - wire

2QUIK6

Turbo Milk Jug displacmnt
Joined
May 28, 2001
Ok, I need to wire the 4th gear indicator wire to the 3rd gear indicator wire, so that the 4th gear indicator is "on" by being grounded the same time the 3rd gear indicator is "on"/grounded.

I read that the 4th gear indicator is a blue wire...which is the 3rd gear indicator?
I've read through about 10 different threads on trans wiring, all mention what each of the 4 wires do, but none outline whihc wire is which???
Oh reason for doing this is because my TCC is not locking after trans rebuild as the 4th gear indicator is not being set as per what I see on DS...3rd gear is and my Ext-G chip needs the 4th gear indicator before it will lock the TCC. The mph setting in the chip should keep it from locking in 3rd.
Thanks
 
From my 87 manual.
Dark green/white = 3rd gear switch.
Light blue = 4th gear switch
Tan/black = TCC
Purple = brake switch


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