All connections are OK that I see. If the horn works then that is good.
Bottom line:
Only 6 wires used from T/S switch. No. 7 (P) not used.
Cyan is NOT green. There is a sky blue on the diagram that can be called Cyan. There is no green on the T/S wiring diagram.
It is possible that they saw that sky blue is very close to Cyan and changed it to green but not the diagram. HOWEVER... cyan has never been available as an automotive or military wire color. So they never had a cyan wire. The standard in the T/S and automotive world is Lt Blu and Dk blu. There was never a sky blu or cyan. The company made up the names.
If you are sure that wiring is all correct after all posts here, I highly recommend to get away from that old T/S switch.
We have to know that the switch is good to continue. You have said all lights flash when lever is shifted left or right. That almost covers all of the issues there might be with wiring or switch or grounds or bulbs. You tested the brake switch and it operates as designed. All that is wrong according to what I read is the brake lights don't work.
So if there are no miswires.......Right now, as you have reasoned, it seems like a problem with the brake "circuit" inside T/S switch. Starting with a known good switch is the answer.
Last edited by bartamos; 06/28/2025 9:09 PM.
