Aux Driving Light Relay Problem

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white7wolf

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Hey guys so about a month I wired up some driving lights (seperate from the fog lights) onto my front bumper. I wanted the lights to automatically come on whenever the high's come on. A buddy of mine did the wiring, but he used a relay and came right off of the high beam wire right behind the passenger headlight.

My problem is such, my expedition is 1998 and was (at one point) imported to canada. Thus it has the daytime running lights. When the daytime running lights are on the relay goes nuts (it buzzes/hums REALLY loudly and vibrates) and the driving lights are on just barely (light they're getting 1/4 power). When I flip my switch in the cab to parking lights/lights etc the relay is fine. (buzzing goes away etc... driving lights are off).

I pulled the fuse on the driver's side that goes to the drl/fog lights... but then I had no fogs. I pulled the relay for now since I wanted my fogs instead.
I'm thinking of either finding a way to disable the DRL's at a different point (I think there's relays for that...) OR finding a way to wire to my fog light switch. Being able to hook up to the fog light switch would be cool so fog light switch pulled + lows = fogs and fog light switch pulled + high = driving lights but i have no CLUE how to do that.

Any suggestions? =D

FYI It's a 1998 eb with a 5.4. 131k miles. Just for the heck of it I've attached a pick of the light setup...
 

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stamp11127

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Sounds as though you have some back feeding. I'm looking at my 99 wiring manual - going to assume yours is wired the same. The day time running lights have two fuses in the central junction box - fuse 26 & 28. Each one protects the low beams, one fuse per side. Pull them one at a time and see if the relay stops the buzzing. If it stops let me know which one did it.
 
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white7wolf

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Thanks Stamp. I will look when I get a chance this week and get back to you. You wouldn't happen to have a pdf version of that wiring manual? =D
 
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