Im going to be putting in a ls1 soon, and was wondering what do i do to get the stock charging system to work. Do i have to rewire my stock plug to the new ls based connector or what?
Thank you

 

Ok from what i found, i just need to run a positive wire from the battary to the back of the alternator and then the brown wire goes to the wire on top on the alternator to my stock volt guage. Sense im going carb thats all i should need correct?

 

Not for sure about that since the LS1s are FI and the harness has most of the wiring on it for that.

 

99+ car alts have a single wire controlled by the PCM
Truck alts have two wires controlled by the PCM

The only additional hook-up is the output wire to the battery. 3rd gen alt wiring is part of the C100 gauge harness and can be removed

 

So i just have to hook a wire to the battary and i can keep my brown wire that goes to the guage to show volts, sense im going carb with the ls1.

 

The brown wire on the TPI alt just gets 12v IGN from the fan fuse. There is no wire going to the gauge. The gauge reads the voltage across the entire harness, not just the alt output

Keeping the LS1 alt with a carb will require an inline resistor to drop the voltage. 12v on a LS1 alt will burn it up. Do a search on ls1tech for that

 

Ok, so i was looking on ls1 tech and im still confused. Sorry. So i need to run one wire from the battary to the back of the alt, the brown wire needs a resistor in the line to make the alt turn on and charge. Or iam i still wrong lol

 

Thats right

 

lol thank you