Andy Fanshawe

iTrader: (1)

Hi all.
Im just completing a TPi conversion using a fueltech ECU on my 91 RS camaro in the UK.
But Im not sure which is the hot wire connection to the injectors. The pink/black one originally in TPi cars.
If I am looking at each injector from the side of the car (photo attached), which pin is the constant HOT feed? LH one or RH one?
Even my factory manual doesn't show me!
Thanks for any reply.
Andy.

ULTM8Z

pink/black is the hot lead. injectors themselves are not polarized, but the connectors can only go on one way.

the ECM switches the ground on and off to fire them. hot side stays at a constant system voltage off the alternator.

Andy Fanshawe

iTrader: (1)

Thank you for the reply.
So I can wire them up any which way I please??!!
I always find this quite weird. Going back to my school days Flemings LH and RH rule says otherwise! But you're the man!
Thank you.
Andy.

scooter

iTrader: (11)

It doesn't matter which way. but I wire them all the same, whether I use terminal A or B, I keep it consistent for every injector