I don't know jack about wiring but I just swapped an LS1 into a v6 Camaro and need to run the INJ2 wire from the fuse box to power half the coils, etc. Can I splice the INJ2 and INJ1 wires or will the coils lose juice by doing this? The v6 only has the INJ1 wire to power all 6 cylinders but the LS1 uses the INJ1 for one side and INJ2 for the other so I have to add an INJ2 wire and fuse to the fuse box then run it to the fender well connector that goes to the PCM. The wire would be spliced before the connector.
INJ1----\(splice)----->Conector----->PCM
INJ2----/

 

You wont "loose juice" on the coils but you will overload the circuit and pop the fuse. Bridging the circuit with a fuse higher than it was rated for or something dumb like a nail will overload the wires and start melting stuff

Do it right, go to the JY, find a FWD econo car and depin an INJ wire from their body connector/fuseblock and install it into yours