I have 87 camaro LG4 that I'm converting to TPI. I'm using a speed denisty harnes and I'm trying to figure out where this wire goes. I know it comes of the fuel pump relay but can't seem to find out what it pulgs into. Also where is the A/C pressure switch located at is it the one on the acumlator or on the back of the compresor?
Thanks
Tad

 

The fuel pump prime wire is meant to hang loose in the engine compartment - it may be powered directly from the battery to run the fuel pump while the engine is not running.

There are two high pressure switches in the A/C system. The switch at the compressor opens the A/C clutch circuit if the head pressure exceeds the set point (around 325 psig, if I remember correctly) of the switch. The switch located on the liquid line (the pipe between the evaporator coil and the condenser coil) closes the secondary fan relay coil circuit above its set point (232 psig).

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Tim

1992 Z28, 305 TPI 5 speed, 12.1 sec @ 114.7 mph

1984 Berlinetta 305 TPI Auto, 13.8 sec @ 99.7 mph

 

Thanks Tim