Fuel pump signal wire from PCM a 12v or ground signal?
#1
Fuel pump signal wire from PCM a 12v or ground signal?
So I already screwed myself by wiring my fans NOT knowing they are ground switched from the PCM so I had to rewire that. Now the green wire that comes from the pcm to trigger the fuel pump, is that ground switched also or is that a 12v source that I can use to turn on/off my fuel pump relay on my Leash board?
#2
LS1Tech Sponsor
Don't know what type of car or year but traditionally GM has used a hot trigger from the PCM to the fuel pump relay.
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