bj40green
Tssss, tssss
I posted the diagram just to explain that the SENSE wire has to be connected to the Battery and not to the B terminal on the alternator.
As I understand GM alternators.... They are activated by the L (Lamp = idiot light) from switched power.
They (sometimes) need a resistor or a diode in series.
Google for: GM 10SI or GM 12SI wiring diagram. Click on pictures and.... tadaaaa
https://www.google.com/search?q=gm 10si alternator wiring&rlz=1C1CHHJ_enCR399&espv=2&biw=1280&bih=649&source=lnms&tbm=isch&sa=X&ei=shyVVN-ZM8P2ggSapYTABg&ved=0CAYQ_AUoAQ#tbm=isch&q=gm 10si alternator wiring
or
https://www.google.com/search?q=gm 10si alternator wiring&rlz=1C1CHHJ_enCR399&espv=2&biw=1280&bih=649&source=lnms&tbm=isch&sa=X&ei=shyVVN-ZM8P2ggSapYTABg&ved=0CAYQ_AUoAQ#tbm=isch&q=gm 12si alternator wiring
HTH,
Rudi
As I understand GM alternators.... They are activated by the L (Lamp = idiot light) from switched power.
They (sometimes) need a resistor or a diode in series.
Google for: GM 10SI or GM 12SI wiring diagram. Click on pictures and.... tadaaaa
https://www.google.com/search?q=gm 10si alternator wiring&rlz=1C1CHHJ_enCR399&espv=2&biw=1280&bih=649&source=lnms&tbm=isch&sa=X&ei=shyVVN-ZM8P2ggSapYTABg&ved=0CAYQ_AUoAQ#tbm=isch&q=gm 10si alternator wiring
or
https://www.google.com/search?q=gm 10si alternator wiring&rlz=1C1CHHJ_enCR399&espv=2&biw=1280&bih=649&source=lnms&tbm=isch&sa=X&ei=shyVVN-ZM8P2ggSapYTABg&ved=0CAYQ_AUoAQ#tbm=isch&q=gm 12si alternator wiring
HTH,
Rudi