Have a quick question, when i wire up my fog light switch and relay should i disconnect the battery? and also can u fry a relay?

 

1: yes
2: I don't know, but probably.

 

1)Safer but, not nescessary.
2)Is difficult but, if you overload it, yes.

 

Its definetely not necessary. I hook up relays 6 days a week without disconnecting batteries once, and I haven't got hurt yet (knocks on wood).

Yes, you can overload a relay. They are rated to certain currents, usually small amperages though, but nothing that you'd be pushing it with from a car wiring system.

 

im having trouble with my jdm foglight switch. i ghetto riged it for a while before i had a chance to really get plugs and stuff. now that i have got plugs it doesnt work. does anybody know why?
Note: when i ghetto riged it the battery was off. when i got plugs the battery was on. anyhelp?

 

anybody?