One other thing this allows you to do. High beams with the fogs. Now I'm really diggin' this mod

 

I ran this mod by a friend of mine who is extremely knowledgeable when it comes to vehicles. This is his response.

Whether this is a good or bad thing is all dependent on which terminals those wires are running to. The bad way is running the main power from one relay to the other. This is going to overload a circuit and lead to at a minimum the wire running warm and the insulation melting off. This obviously can lead to fires and what not.

Now, if they tapped into the actuation side of the relay, then the loading on the circuit is minimal. But, in most cases, it may not always be quite that easy. I would need to know what year truck you are talking about and then I could give you a better idea of how to do this sort of modification in a safe and reasonable manner.

When I hear more I'll let you know. For now, be careful.

 

My friend recommends the following;

In the case of our trucks, it is best if you install the jumper between the brown and white/black wire on the back of the headlight switch. You don't need a heavy gauge wire to run between the brown and the white/black wire as this wire will only be pulling about 0.2 amps at most. This will also be well within the safe limits of the headlight switch.

The only question remaining is whether you can pull your headlight switch out in the PARK position? if yes, then you are all done after installing this one wire (this will allow your fogs to remain on even with your high beams). But, if you can't pull it out, then you will need to disassemble the headlight switch and you will need to modify a ramp inside to allow the switch to be pulled out in the PARK position. This will keep things looking factory and will also not require any additional switches. Now, if you want to install an additional switch, then instead of connecting up to the white/brown wire, you will need to connect up to the yellow wire on the back of the headlight switch. But, please note, this will force the fog lights to come on any time the parking lights are on unless you install a switch.

Hope this helps.

 

The headlight switch in the dash operates the relays under the hood, which i tied together in the fuse panel. both mods are the same it just depends on if you would rather tie the wires together in the dash or tie the relays together under the hood. I tied the control side of the relays together not the load side.

 

Just did this mod and I'm very happy with it! Also, instead of just using a wire I installed a simple toggle switch, so now if I ever don't want my fogs on all I have to do is flip it.

Thanks for the awesome post!

 

I did this mod also but had to remove my jumper wire as it melted the wire and I used the same gauge or slightly bigger than stock.....anybody know this happened???