I got one from a scrappy, 2 white 1 black and 1 grey... how do I wire it up?
2 white are for the heating circuit
grey is earth
black is signal
do both white have to be +12v then?
No, one to earth, one to +12v.
so its basically 2 circuits, one for the heater and the other for the signal right? hence can I earth one white to the grey? IE same earthing point on
the chassis?
also black goes to (as in my case) Megasquirt right?
This answers my own question:
Link in PDF