constant power while cranking wire?
03-21-2010, 07:51 PM
#1
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constant power while cranking wire? im hooking up my digital boost guage and i need a wire that when the car is off, the wire gets no power. but when you go to start the car, it stays constant WHILE cranking. it needs this to go through a zeroing out process. so where most power cuts for a split second while the car is cranking to start, i need a wire that becomes, and stays live.
if i dont have this wired properly it will not properly read boost and give a false reading
also my car is not a gm car. but has a gm engine/trans...so if this wire is available off the pcm, that would be great.
thanks!
if i dont have this wired properly it will not properly read boost and give a false reading
also my car is not a gm car. but has a gm engine/trans...so if this wire is available off the pcm, that would be great.
thanks!
03-24-2010, 04:00 PM
#4
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If the wire you are looking for is in the Mazda it's the ignition wire and it's black with a white trace in the ignition switch harness. It is dead with the key off and hot with the key on through crank. This is the circuit that powers the ignotion module so it would not start if that wire didn't have power through crank. There is a 2nd ignition wire also that is black with a red trace but I would use the primary one.
