Fogs on with lows and highs(pics inside)

[InTruckDesign]

For those who want fogs on with lows and highs without touching the foglight switch all you need to do is add a diode between the low beam relay and the fog relay. Below are pics on which relays they are and which pin you need to use. I recommend getting some 16-18ga. stranded wire and attach it to the ends of the diode, then you can just stick the stripped wire into the proper spot and then insert relay.

*****DISCLAIMER*****

This is depicting how I wired "my" tahoe to function this way I take no responsibility for someone improperly wiring theirs and frying some electrical components...In other words DO THIS MOD AT YOUR OWN RISK!!!

 

[WingsAA]

What size diode? Radio Shack p/n by chance?

 

[2 E L O]

Yeah, if you can give a little more information about what size/rating diode you used then I think I'll go ahead and do this mod.

Thanks, man!

 

[InTruckDesign]

You can use a 1N4004 1amp micro diode.

It is plenty as you are just triggering a relay.

 

[2 E L O]

You're the man! Thanks, bro!

 

[WingsAA]

One other question. Is the diode directional or does it matter?
Thanks much. I know several folks here have been looking for this mod.

 

[DwDrummer]

Just tried this out on my truck and it worked however the diode got really hot after about of minute or two so I just unhoooked it to be on the safe side. Did I do something wrong?

 

[InTruckDesign]

Did you verify the pins with a meter or other test equipment. Possible that you tapped the 12v out on the lowbeam relay instead of the trigger wire. Best is to test all connections for voltage.

 

[DwDrummer]

I used the same holes you did but the diode got really hot quick so I just unhooked it to be safe!

 

[InTruckDesign]

I would get a meter on it...there may have been slight changes to the pin locations between the early build 2007's and the 2008+ models.