I'd like to pick up a set or two of the Baja lights from Walmart and would like to wire them into my brights, so when my brights are on, the fogs are on. I am a wiring noob, and was wondering how I'd go about doing this? Please no one sentence answers, I really don't know how to set this up.

Thanks!

 

you should check your local laws first,But I think there are directions in the box on how to wire them to a switch,just run the switch wire to the high beam power wire

 

You are definitely going to want to use a relay, isolate high current from the actual low current wires. Get full battery power to the lights that way. So, take a relay and wire it like this: http://www.classictruckshop.com/club...h/foglites.htm

Now instead of using the ignition or battery power (that runs into the switch) you can tap into the high beam wire and let that trigger your relay. You will be safe, have full control of the lights and have full power to your aux lamps.

 

So would I splice the #85 in the picture in the link into the wire for the brights wire and run everything else the same way that's in the diagram?

 

Yes, IF you didn't want a switch to control when you wanted your aux lights to be on with the brights. Otherwise I would wire the high beam light in place of the wire coming out of the fusebox in that diagram. Just make sure you put an inline fuse in that wire to keep from blowing things if a ground should occur.

 

Alright, and if I wanted to run 4 lights together, I'd just run the positives coming off the 4 lights into one wire that goes into the relay? Also, should I use a 20 amp fuse as pictured, or go for a larger one? And what guage wire should I use for max power? Lastly, would I need to change anything if I run 100w bulbs in them?

Thanks for the help so far, I think those are all the questions I have. Seems pretty straight forward.

 

If running 4 lights - you would use 2 relays then using the one trigger wire for both.

If they are 100 watt lights then you are using about 8.3 Amps per light.

The suggested MAXIMUM fuse rating is no MORE than 50% of the maximum current load a wire can handle.

Watts = Amps * Volts

100 watts/12 volts = 8.33333333 amps for 1 light.

Expected accessory(s) draw X 1.5 = suggested fuse size for the circuit.

Sooo if you have 2 - 100 watt lights then you are going to need a fuse that is 25 amps.

Always fuse for the wire not the light.

You should be fine with 12-10 gauge wire if you run just a pair.