I have a new set of foglights and a switch. I haven't looked under dash yet just been reading up on the install. 1999 s70 glt and the wire for lights and switch is in place. What exactly is the J relay jumper. I hope I can see what I need to do when I get under steering wheel to see panel . Any advi...

Thanks guys, I'll let you know how it goes when my used lock comes in

I do have the old keys and fob.im waiting for the salvage lock and keys to show up.

What would happen if I replaced the lock cylinder with one from a salvage yard