Brake Proportioning Valve connection

[85Dan85TType]

Hey guys, my car was originally a PowerMaster setup and has been converted to vacuum.

Is it necessary to leave the plug in for the BPV any more? It's only function is to tell if there is adequate pressure in the PM system, right?

I'm just eliminating unnecessary wiring and plugs and would appreciate the input!

 

[1quick6]

I could be wrong, but you still need it to illuminate your brake warning light if line pressure drops due to a malfunction/leak in the brake system as a whole. The pressure switch on the PM is what monitors the PM pressure in the accumulator so it can turn on the pump when the pressure drops below the low setpoint.