i have 4 lights on the front of my truck. currently have two wired up. but would like to avoid cutting and stuff to put another switch inside.

now that i have a custom bumper, and no fog lights, can i wire the 55w hella's safely to the stock fog light wiring?

 

If they are 55w, you will probably be fine.
If you want higher powered lights, do what I did on my ranger. I used one of the fog pigtails to trigger a relay for KC's lights, and run new wire through the relay of course. This way you can switch them on with the factory switch.

 

im good with the hellas.

so basically cut off the stock fog light plug, and splice in new wires?

is one wire power, and the other ground? and if so, which is which.

 

i just added a new relay and used the ground signal from the fog light switch to trigger it. figure a 30a relay should cover my 4 100w lights. and keep the load out of the stock wiring.

 

The stock fog light circuits can handle 55 watts just fine so you should be good. The black wire is ground.

 

sweet! thats exactly what i was lookin for.

thanks!

 

well it worked great! next up is wiring it so that they stay on with my brights..

 

You should be running a 40 amp imo. 30 amps is questionable at best for 400 watts.
400 watts / 12 volts = 33.3 amps
400 watts / 14 volts = 28.6 amps
Basic math. I would swap in a 40 amp relay if it was my truck.

 

Yea 28a is close, ill keep an eye out for some 40a+ relays while im at the junkyard. it's just 30a is so much more common which is why im running that.

 

The 40 amps are everywhere dude! lol

 

yeah they have em at vatozone.

thats where i get 40 A relays everytime i fry one after mudding or something.
they're only like 5 bucks lol

 

ive never bought a relay so what do i know lol. i always just snag a few when i go to the junkyard.

 

Just to be sure. If I wire my 55w hellas into the factory foglight wiring I'll need to replace this relay with a higher rated one?

I'm planning to run 3 or 4 lights. Can the stock foglight wiring handle 2 hella lights off of one of the foglight wires and the other 2 off the other?

 

Electrical noob bump

 

there's a guy on here that modded the 07 fogs, look for a guy named H.P Freak I think

 

I'd run two hellas off the stock fog. if you plan on running four, you can run another relay, and just use the ground signal from the foglight switch to feed the new relay. it'll split the load and work the same.

 

yeah I agree

 

I could clean up my wiring then haha.

For my lights on the bumper I ran a relay for each light cause I didn't want to fry the stock wiring haha

 

That should make it easy. Thanks.

 

Run new wires and a new relay for your foglights if you're going to add more than 2.
The signal wire to turn on the relay should come from the original foglight wiring. The only "power" that would come through the foglight wiring is enough to turn on the relay.
Hook the lights up following the instructions that came with them. But instead of using their switch and wiring, tap into the factory fog light connector. Did that make sense?
I think someone even did a write up for this, it is really simple...
May be more useful info here. http://www.offroadrangers.com/forum/...ad.php?t=20956

 

Awesome thread. Thanks.

If I'm reading it right. I can do it like this? Just take the power from the factory fogs, tan/orange wire, and plug it in at the red circle? Then wire the rest like the directions say and do the foglight mod to get them to work with high beams?



I'm such an electrical noob!! lol

 

I haven't read through through it to get the correct colored wire, but that is right.

A relay is just a "remotely powered" switch. Most switches are only designed for a few amps, so that is the reason for using a relay. When you power that circuit (turning a switch or putting the foglight power into it), it just closes the circuit and sends the battery powered on to the light.

 

Awesome! Thanks.

 

Back from the dead!!

Starting to wire up these lights and had some more questions.

Can I run 3 hellas off one relay, just like the diagram above but with 3 lights? Would that be too much for the foglight power wire, fuse, and relay?

 

x2

Kinda like this.