will I need to take anything off of my old wiring harness and splice it in with the painless wiring harness, for lights and power steering etc.?

 

The painless harness should just be the engine harness. The main harness that has lights and gages and such will not be affected.

 

depends on the one you ordered, most of there late modle engine wiring comes pretty complete other than a few ods and ends

 

yeah like I think the connector that goes into that brake booster plug is one of the things. I'm not sure what all is missing, yeah I realized the headlights and stuff plug right back in "DUH Im and IDIOT" and the ac stuff plugs back basically the same. I think it should go ok