Trailer lighting question

[TheSmokinStroke2002]

Well guys I just wired up a 4 pin connector on the truck to haul my flatbed home and I have running lights but no brake or turn lights. I looked up the diagram on Mitchell and it said that it has a left and right turn trailer tow relay. Can anybody shed some light on what ones these would be in the engine compartment or what other problems could be? Fwiw the trailer has brand new wiring as well.

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[Isaac3384]

I know our trucks have individual fuses, but don't know about relays. The fuses should be under the steering column behind the removable dash panel. You need the owners manual or a repair manual to distinguish which fuse goes to what. If I remember right, there is a long row of fuses that run up and down, and they are near the bottom of the row. There is one for the right turn/brake, left turn/brake, and one for the running lights.

 

[TheSmokinStroke2002]

Alright cool. Thank you sir!

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[Isaac3384]

You're welcome.

 

[dasboot]

there should be multiple relay's, the square box type, and fuse's for the tow lights and brake lights. check you manual

 

[abbottfarms]

I think they are actually under the hood, they are 7.5 amp mini fuses if I recall correctly.

 

[Isaac3384]

It depends on the year...99-07 should all be under the dash. 08 and up, may be under the hood.

 

[abbottfarms]

On my 01 and 03 and 04 the mini fuses for the trailer lights are under the hood....

 

[TrailerHauler]

Check for voltage at your 7 way/4 way at the rear of the truck. So long as the trailers wired right, and it is new wiring it's most likely simply a ground issue.

 

[TheSmokinStroke2002]

I'm going to dig into it deeper when I wake up. Just got home from a 4 hr
Trip from Ohio to Michigan so I'm a little tired.
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[Isaac3384]

On my 01 and 03 and 04 the mini fuses for the trailer lights are under the hood....

That is really odd; my 99 gasser and my 04 diesel both have the fuses under the dash...

 

[99F250Smitty]

Like said above, on my 99 my fuse box was under the hood, on my 02 its under the dash panel under the steering wheel. But it seemed like those little 7.5 amp fuses are always blowing for the left and right turns.

 

[Dave]

It depends on the year...99-07 should all be under the dash. 08 and up, may be under the hood.

99-07 trailer fuses are under the hood. At least the ones Konnor needs are

 

[Isaac3384]

Let's just all agree that they will either be under the hood, or under the dash. Your owner's manual will tell you where to look. I do remember the fuse box under the hood now that I think about it; doesn't it hold just a few fuses? It's narrow and has <10 fuses? I vaguely remember seeing this, it's been 4+ years since I worked at the trailer shop, so cut me some slack...lol

 

[TheSmokinStroke2002]

The only thing I have under the hood that I can find are the 3 relay boxes by the intake. Am I missing something

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[TheSmokinStroke2002]

according to mitchell i have a left and right turn trailer tow relay in the auxiliary relay box #4. now how the hell do i figure out which one that is LOL

 

[TheSmokinStroke2002]

replaced the fuse and relays and i now have lights

 

[Isaac3384]

Great success!

 

[TheSmokinStroke2002]

Great success!

Yeah buddy! Now I just need to wire up a 7 pin connector

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[Isaac3384]

On the truck or trailer?