Each of my stock Ls1 o2 sensors have 4 wire square plugs: brown, brown, tan, and purple. On the psi harness the connectors are 4 in a row, left side is Tan, Purple, Black, and Pink, right side is Tan, Purple, Green, and Pink. I've been searching through the old threads, found one where someone had brown, brown, purple and pink to pink, black, purple and tan (similar) but I haven't found any brown, brown, tan, and purple. Any ideas?

 

PSI uses the connector for the LT1/C5 on their harness. You will need to purchase the AFS 75 or GM Number 19178930. If you want long O2 sensor Connectors on the O2 go to the parts store and tell them you have a 01 Corvette. If you want the standard length connector tell them you have a 1997 camaro z28/ss.

 

I can't wire the sensors I have to the harness by bypassing the plugs? I'd rather not blow 80 bucks when I have good sensors

 

you could replace the connectors on the O2 sensors. I would not recommend doing anything to the O2 circuit besides solder less crimps. Anything else has been known to cause issues.

If you were local I could crimp the proper connector onto your sensors. Honestly the easiest (but most expensive) fix is to get new sensors.

I wish I had a better solution for you.

 

Thanks for the advice but my question still stands, which color wires go to which color wires?

 

I'm about to do this, still not sure

 

Call Jon at PSI, he's always been helpful for me.