[Belair62]

Hang on...the temp sending unit is N/O until engine reaches operating temp...it then closes and allows power to the TCS solenoid which closes to STOP vacuum advance in any gear except 4th....the trans switch must OPEN ground in 4th gear to de activate solenoid and allow full advance...there would be no way to jump out this operation at the solenoid unless you connected directly to ground and eliminated the trans switch...could this piece be used to bleed off some voltage to extend the life of this solenoid which is powered a majority of the time the car is running ??? I need to see a manual trans diagram...can you tell I'm bored ? This install looks factory ..it is crimped into the factory terminals...