My car has no front fog lights. I'd like install some. I'm wondering if I have to do all the wiring new or there may be an existing wiring I could use?

 

The wiring is probably already there; fairly common on Jags of this vintage. Look for unused red/yellow wires taped back onto the other looms in the area, perhaps on either side of the radiator.

The existing headlight switch will probably have an unused fog-lamp function as well

Cheers
DD

 

Actually, my car has rear fog lights. So yes, the switch has the function. Will look for those wires.