Hi, I'm swapping out my truck injectors for some bigger LS1 type injectors, and I'll be splicing LS1 connectors into the truck harness.

The new connectors I have don't have color coded wires, so I'm wondering if it matters which wire is power and which is ground? If so, which side is which on the connector?

=-=
Kermit

 

It should have a little plus sign on the connector itself to tell which wore is which.

 

The injectors have a + sign on one side, so you must hook each pink wire to that side for the polarity is correct.