?Hey
I have a 2002 f150 and I want to run 2 100w spotlights, which I would like to wire into my factory fog light wiring. I need to use a 15a to 20a fuse to run these and 10guage wire. The factory fog lights have a 5a fuse with 16 gauge or 18 gauge wire. Can I use a relay somehowe to run these lights off the factory wiring?

 

No if you need 10ga. wire to power the lights a relay will not increase the size of the 16ga. wire. You can use the 16ga. to switch the relay but you will need to run the 10ga. to your power source.

 

Yes I know I would have to run a 10ga wire to the relay and to the lights but I wasn't sure if I could use the factory wiring for the relay and factory lights