1992 GMC Trailer Wiring

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Trailer Wiring

Available Models for 1992 GMC Trailer Wiring

Trailer Wiring Harness

Make installing your trailer wiring harness as easy as possible with a custom fit wiring harness. Trailer wiring from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, and Hopkins eliminates or reduces the need to cut and splice wires. It also helps to protect your vehicle's sensitive electronics from mis-wired trailers.

Choose the year of your vehicle to the left to find a custom fit trailer wiring harness.

Wiring Adapter Fitguide

Trailer Connectors and Adapters

Wire and Wiring Accessories

Trailer Wiring Manufacturers


1992 GMC Questions and Answers

  • What is the Towing Capacity for a 1992 GMC K1500 SLX
  • According to an old GM document I have the towing capacity of a 1992 GMC K1500 is as follows: Regular Cab or Extended Cab, any bed style, with a 4.3 liter the capacity is 5,000 pounds. With the 5.0 liter motor capacity is 6,500 pounds. With the 5.7 liter it is 7,000 pounds. And with the 6.2 liter is goes down to 5,500 pounds. You can also check for a sticker in the driver's side door jamb. It should list the gross vehicle weight rating and the gross combined vehicle weight rating....
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  • Is the Oval LED Trailer Utility Light a Flood or Spot Light Style for Interior Trailer Lighting
  • The Oval, LED Trailer Utility Light, item # BUL78C3MB, is designed as an area light, more like a flood than a spot light, and would be a good choice for interior lighting in an enclosed cargo trailer. The Straight 3-Wire Pigtail, item # A45PB, can be used for wiring this light. This LED light could be spliced into the tail light circuit, so the lights can be activated with the vehicle tail lights. A switch inside the trailer would be needed so that the lights are not on when traveling down...
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  • How to Determine the Correct Size Grease Caps for a Southwest Kendall Trailer
  • In order to determine the correct size grease cap, the best thing to do would be to take apart one of the hubs and get the outer bearing and race numbers. You can also get the hub bore inner diameter using dial calipers for the most accurate measurement. I have included a video on removing a hub below. This will determine the correct size you need whether it is the DC200L-DCRP, # RG04-040, or another size. I have included a link to our grease cap main page below. I went out to the warehouse...
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  • Trailer Hitch Recommendation for a 1992 GMC 3500
  • Draw-Tite trailer hitch # 41947 fits the cab and chassis models of the 1992 GMC 3500 trucks. These are the trucks that do not come with beds and are turned into utility trucks, ambulance vehicles, and similar things like that. These trucks have a narrower frame width than the pickup models. If your truck's frame width is 34 inches wide measured from the outside of one frame rail to the outside of the other then this hitch will fit. If you have a regular pickup model with a standard/step...
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  • What does Super LED mean in the Optronics Sealed Super LED Trailer Light # BUL78C3MB
  • I spoke with my contact at Optronics and he said that the Super LEDs in the Optronics Sealed Super LED Trailer Light, part # BUL78C3MB, are brighter than the normal LEDs. He gave me a candela output rating on the Super LEDs as 125 cd. He said the candela is the luminous intensity of the light. For comparison he said the candela output on a 100 watt incandescent light bulb in your home is 100 cd.
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  • Gooseneck Hitch Recommendation for a 1992 GMC Stepside 1500
  • Yes, I confirmed with my contact at B and W that the Gooseneck hitch part # BWGNRK1050 that you referenced will fit the stepside models of the 1992 GMC 1500 trucks like the one pictured so it would work well for you.
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  • Recommended Trailer Hitch Compatible With 1992 GMC 1500 4WD with Standard Bumper
  • The Curt Trailer Hitch Receiver # C13042 is a confirmed fit for your 1992 GMC 1500 4WD truck. There is no drilling needed for this hitch installation, but you will need to lower your spare tire for installation. If you don't already have trailer wiring, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118315 which is confirmed to fit your truck. This custom-fit T-One connector plugs into your GMC C/K Series Pickup's wiring harness, which is located...
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  • Blue Ox Alpha Tow Bar # BX7365 Makes Popping Noise when Towing with Pickup Truck
  • The first thing that you will want to check is to make sure that the Blue Ox Alpha Tow Bar # BX7365 isn't binding. This could be the case if your tow bar is not completely level. When towing with a motorhome you have a 3" safe zone (see attached picture), but that is not the case when using your pickup. To remedy this you can use a High-Low adapter. I have attached our selection of adapters as well as a helpful article to help you decide if you need one or not. I also spoke with my...
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  • Replacement Tailgate Assembly of Extang Tuff TonnoSoft Tonneau Cover for 6-1/2 Foot GMC 1999-2006
  • The Extang Replacement Tail Assembly # EX14940-45 for the Extang Tuff TonnoSoft Tonneau Cover # EX14940 does come with the silver rail and black end clips to secure to your side rails, however it is not the correct fit for your truck based on the photo you sent. This is a fit for 1999-2006 Sierra models with the 6-1/2 foot bed. If you have the older style bed, then I need to know if you have a 6 foot bed or the 7 foot bed to get you the correct replacement part for your tonneau.
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  • Replacement Roadmaster Base Plate Arms for the Existing Base Plate Brackets
  • The Roadmaster XL Base Plate Kit - Removable Arms # 131-15 will use the Roadmaster Replacement Arms for Base Plate Kits # RM-ARMS. Because these will be custom fit, they are only available in pairs and are non-returnable. There is a form to fill out for the correct part attached. Please allow the stated time on the product page for delivery.
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  • Replacement Westin Hardware For Step Bars 23-0500
  • Yes, what you need is the part # 23-050pk. This is the replacement hardware for the # 23-0500 bars you have that will fit your 1992 GMC truck.
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  • Hitch Recommendation for 1992 GMC Sierra SLE with Step Bumper
  • For your 1992 GMC C/K with a step bumper we have the Curt hitch part # C14081 which is a confirmed fit. This hitch requires you to temporarily lower the spare to install it but you can then reinstall it once the hitch is installed.
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  • Troubleshooting Trailer Connected Error on Hopkins Agility Brake Controller
  • Since you are getting the LED connection light in the lower right corner of your Hopkins Agility # HM47294 brake controller, the unit is reading a draw on the brake output pin. This is the 5 o'clock location of your 7-way. Sometimes it has to do with a connector that just needs to be cleaned, so I recommend using some sandpaper or steel wool and just cleaning the connections inside your 7-way and then on the plug as well. Even slight corrosion can cause that draw. Then I recommend using...
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  • Recommended Parts Needed To Convert 4-Way Trailer Connectors To 7-Way On Vehicle And Trailer
  • The Hopkins Endurance # HM47180 would work great for converting your 4-way to a 7-way and 4-way connector. The included instructions have a wiring diagram for the trailer plug you can check out. If you just want the 7-way trailer connector, I recommend part # PK12706. If you want the trailer connector with jacketed wire I recommend part # H20043. To avoid ugly wiring and taped up connectors I recommend using a junction box like part # 38656. This is attached to the trailer and has...
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  • Will the Draw-Tite Front Hitch # 65005 fit a 1993 GMC Jimmy S-15
  • Yes, I checked with Draw-Tite and they confirmed that the Draw Tite Front Hitch # 65005 that you referenced will work on your 1993 GMC Jimmy
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  • Replacement Installation Kit Bolts for Westin # 25-0500 Step Bars on a 1992 GMC C/K Series Pick Up
  • The bolt you need is a M12-1.75 X 120MM hex head bolt. Westin does offer the bolt as part of a replacement hardware kit, part # 25-050PK but does not sell the bolts individually. The install kit is available on our website.
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  • Parts Needed to Install 7-Way on 1992 GMC Truck
  • You will need to start with a 4-way (if you do not have one). For that you would want the # 118315. If your trailer does not have brakes all you then would need is the part # 37185. If you do have trailer brakes you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well. For a...
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  • Running Light Circuit Not Working on 4- to 7-Way Adapter # 37185
  • On the Hopkins 4- to 7-Way adapter # 37185 the brown wire is the running light circuit. There could be a break or a problem with the connection on that brown wire somewhere between its 4-Way and the back of the 7-Way. Also make sure that the white ground wire on the adapter is attached to a clean and corrosion free bare metal surface. This wire must have a good connection or you could run into problems with some of the lights. A weak ground could be the result of this issue since the...
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  • B and W Gooseneck Hitch Recommendation for a 1992 GMC Truck
  • Yes, the B and W Gooseneck # BWGNRK1050 that you referenced has been confirmed to fit your 1992 GMC Full Size Truck. I attached installation instructions for you to check out as well.
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