Question about 2003 Chevrolet Suburban 1500

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No trailer lights nothing 2007 suburban

On my 2007 suburban trailer wiring no lights work is there one main fuse or relay for trailer wiring?

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  • Chevrolet Master
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Check owners manual. Check under hood fuse panel. Likely a blank spot where needs to be added.

Posted on Apr 19, 2009

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1 Answer

Have no power for running lights at trailer plug


The T PARK fuse in the rear fuse-relay block supplies battery positive voltage to a separate park lamp circuit connected to the trailer wiring harness..
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Beneath the left rear seat
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My park lights keep blowing fuses


You have a short to ground in the park light circuit..best have a mechanic look at it because its possible the trailer wiring was faulty and shorted out the Smart Junction Box (SJB)...the park lamp relay is controlled by it and the relay is built into the SJB

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F150 2005 trailer lights are all out


Its a fairly complicated system. There are various fuses and relays for each circuit.
There is a right and left turn relay in the battery junction box. There's a relay for parking lights in the other box in the engine compartment. And so on.
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Find the LEFT INSTRUMENT PANEL FUSE BLOCK. At the TURN SIGNAL/FLASHER MODULE, a 10A fuse (A9?) protects the right trailer stop/turn circuit (DK GRN) which you say is OK. Back at the S/FM, a 10A fuse (A8?) protects the LEFT trailer stop/turn circuit (YEL). At the UNDER HOOD FUSE BLOCK, a 15A TRL PARK fuse (B6?) protects the running/parking lights (BRN).

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2007 tail light fuse location honda crv


I had this problem with my 2007 Honda CRV -- all the lights worked EXCEPT the tail/running lights and the license plate light. The other tail lights worked -- brake, reverse, indicators, and hazards. Front headlights also worked, but when the headlights went on the back tail lights did not (not to safe for driving at night!!)
The fuse was #15 in the interior fuse box (under the dash driver side) with the label "small exterior lights" ( also check fuse #19 labeled "small lights main"). The cause of my problem, I believe, is a bad or lose wire in my license plate light.

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1 Answer

Trailer Wiring Harness


The trailer fuses should be located out in the engine compartment inside of the fuse/relay junction box.

That is unless the trailer connector on the vehicle and the wiring were installed by someone who used an after-market trailer connector, and if that is the case then you might find the fuses up under the dash or around the fuse/relay junction box, and the fuses will most likely be inside of in-line fuse holders that are part of the after-market wiring. Here are some diagrams that might help you out.


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Jun 04, 2010 | 1999 Dodge Durango

1 Answer

The outlet for thr right turn and brake light coming out of the plug in for trailer wires has no voltage. The others of the 4 wire plug work . What could be the problem


see if you can follow the harness from the back of trailer it should go a short then plug into main harness,these sometimes get corroded, but first chack fuse box under hood for trailer lighting there are seprate fuses for L and right turn and brake

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2 Answers

I have a 2004 Chev Suburban and my trailer running lights do not work but the stop and singnal lights do. Can this be a fuse issue and if so what fuse runs the running lights?


There is a fase under the hood marked trailer tail lights,it is a 15amp fuse and if continues to blow ther is a problem in the trailer wireing or the plug on the trailer.

Nov 06, 2009 | 2004 Chevrolet Suburban

2 Answers

Wiring diagram or fuse box diagram-2007 GMC Envoy Denali


Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
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Hope this helps
Farrout!

Mar 07, 2009 | 2007 GMC Envoy Denali

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