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Trailer lights plug on truck

Wondering if there is a fuse for the constant 12 volt that is located in rear of truck by hitch for trailers everything works besides that

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Posted on Jul 21, 2013


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Posted on Jan 02, 2017

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SOURCE: 2006 chevy trailer tail light fuse?

yes there is , under the hood in a fuse block on left side of engine compartment , will be a 10 amp trailer parking lamps fuse ( TRL PARK ),,, also on right side of dash will be a right trailer turn/stop fuse and a left trailer turn/stop fuse, just for your information . i don't know if it will be plainly identified , if not maybe your owners manual can help identify it . were rootin for ya .


Posted on Jan 17, 2009

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SOURCE: 2005 trailblazer trailer light connection

Should be in the front under the hood in the main fuse box on the left side of vehicle . look for the aux fuses for the traler plug.

Posted on Mar 25, 2009

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SOURCE: 2006 GMC Sierra 2500HD 4WD trailer light connection fuse blown?

under the hood on drivers side right behind the battery. Will be marked trailer light left sand right.

Posted on Jun 27, 2009

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SOURCE: Running lights work but no brake or turn on trailer

wires on truckhave a feed ,are they connected correctly??

Posted on Feb 10, 2010

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SOURCE: Where is the fuse located for the 12 volt power on

Hi, the power terminal to the 7 way , is not hooked up from the factory. In order to hook this up, you must locate 2 wires under the hood. The 1st wire, is between the driver fender, and the fuse box. This wire is red , and taped up. Grab hold od this wire, and pull it out of the tape. It has an eyelet on the end of it. The next wire is below the steering column, same scenario, red wire, with an eyelet, pull this out of the tape, route both wires to the front of the fuse box (underhood), take the cover off of the fuse box, you will find 2 silver threaded dtuds on the front of the fuse panel. 1 larger than the other.route these 2 wires to these two studs, and secure with 2 metric nuts. You will have to get these. does not matter which wires go where, as both studs are battery power, and are both fused. the wires will only go on 1 way anyway. after the nuts are tightened, reinstall the cover, and you will have power at the 7 way. Good luck...

Posted on Sep 23, 2010

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Need color code for a 7 pin on a dodge Durango trailer hitch

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Year,make and model i need but try checking the fuses for park lights, it sounds like the fuse may have blown.

Also if you have a trailer hitch and have used it then also check wiring on trailer but if this is not a truck or does not have a hitch then do not worry about checking trailer, just check fuses to car or truck for park lights. good day

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Both the ball and the trailer hitch should be grounds so I'm guessing the trailer brakes have a hot wire touching the frame somewhere but not enough to blow a fuse. Before connecting the hitch to the ball, have someone press the trailer brakes and check between the hitch and the ball with a volt meter for 12 volts. If you do then something is wrong with the trailer brakes. I'm just guessing though.

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I have a standard flat blade seven pin trailer receptical that I believe is factory wired. everything works fine with the exception of pin #4, which is supposed to be the 12 volt constant or battery...

In your fuse box there should be 2 marked post 1 and post 2. The posts are located under the cover just behind the fuse box. Usually one post is used for trailer brake power and the other for 12 volt trailer power. Some of these are left disconnected from the factory. You might have to remove the fusebox cover to get to them. Also try They have a great website with lots of info.

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Which fuze do i replace on a 2005 isuzu ascender if my trailer recepticle is not working? i have already replaced all the trailer lights and electronics, it's not the trailer.

i assume that you have a trailer light attachment installed at the rear of the vehicle somewhere around the tow hitch,turn on your head lights,obtain a volt meter and check D.C. voltage on the pigtail,ground the black lead to clean frame metal and check the pins on the plug with the red lead,one of them should be live 12v dc.that will be your trailer running lights,theother will be brake lights,you will have to have someone hold trheir foot on the brake to test it,dont assume the trailer is ok. verify voltage at the connector on the vehicle first,if you have 12 v,there the trailer has the problem,or if it hasnt been used in a long time the connector may need to be cleaned,as far as the fuse goes depending how it was installed,could be several choices,set your meter on continuity and check all fuses,you dont have to phisically remove each one,if you look close there are two small contact points on both sides of the amp rating number,most likely you will have two or three fuse panel locations,primary is under dash drivers side ,secondary panels and relays located in engine compartment under hood on fender walls black plastic box w/cover,,also may be on the sides of the dash board,can only see when the door is open ,or behind the ashtray in the center console,replace any fuses that are blown,be aware of the plug configuration on the car to the trailer,and that the ground wire on the car side of the plug is also the ground lead on the trailer connector, wires may have got mixed up during repair,happens to the best of us once in a while,clean ground connections are very important on trailers,old rusty wires and scerws should be removed wire brushed and reinstalled,or replaced if needed,then sealed with varnaloc,or spray paint,to protect them,hope this helps you.aloha from maui todd0708

Oct 01, 2009 | 2005 Isuzu Ascender

1 Answer

Wiring diagram

If you are going from a 4 pin on your trailer to the 7 pin on the truck. You need to go to parts store or a department store (ex Wal Mart) and look in trailer section and find the adapter. Thats what I did. Also Remember if your lights don't work on trailer, check the plug to make sure its tight or check the fuse under your drivers side rear seat for that fuse box.

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