Custom Fit Vehicle Wiring > 1978 > GMC > Van

1978 Van by GMC Custom Fit Vehicle Wiring,Wiring Draw-Tite 18252

Draw-Tite Custom Fit Vehicle Wiring,Wiring for the 1978 Van by GMC

Rating: rating rating rating rating rating
43 reviews

Code: 18252

Retail:$15.45

Price:$14.97

Shipping Weight: 2 pounds

Shipping Special

Orders of $150 qualify for free shipping.
Lowest Price Pledge

Trailer Wiring Harness Installation - 2000 Buick Century - Video
Trailer Wiring Harness Installation - 1995 Chevrolet Camaro - Video
Trailer Wiring Harness Installation - 2004 Chevrolet Cavalier - Video
Trailer Wiring Harness Installation - 2003 Chevrolet Cavalier - Video
Show all 9 videos

4-Pole Hardwire Kit Including Circuit Tester - 1978 Van by GMC

Hardwire 4-pole trailer connector kit for GMC Vans with combined wiring - where the turn and brake signals are sent along the same wire. Quick splice connectors and circuit tester included.

18 Gauge Bonded Wires
Taillight, Stop and Turn Functions Printed On Wires
Ground Wire Runs Full Length Of Assembly
Includes Circuit Tester
Includes 4 Wire Taps
Measures 72" Long

Recommended: Wiring Harness Mounting Brackets

20252 Draw-Tite 4-Flat Wiring Kit

Video of 4-Pole Hardwire Kit Including Circuit Tester

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Trailer Wiring Harness Installation - 2000 Buick Century

Video install trailer wiring 1995 chevrolet camaro 18252

Trailer Wiring Harness Installation - 1995 Chevrolet Camaro

Video install trailer wiring 2004 chevrolet cavalier 18252

Trailer Wiring Harness Installation - 2004 Chevrolet Cavalier

Video install trailer wiring 2003 chevrolet cavalier 18252

Trailer Wiring Harness Installation - 2003 Chevrolet Cavalier

Trailer Wiring Harness Installation - 2003 Chevrolet Impala

Trailer Wiring Harness Installation - 1996 Chevrolet Lumina

Video install trailer wiring 1994 chevrolet lumina 18252

Trailer Wiring Harness Installation - 1994 Chevrolet Lumina

Video install trailer wiring 2003 ford focus 18252

Trailer Wiring Harness Installation - 2003 Ford Focus

Video install trailer wiring 2001 ford focus 18252

Trailer Wiring Harness Installation - 2001 Ford Focus

Video Transcript for Trailer Wiring Harness Installation - 2000 Buick Century

Today on this 2000 Buick Century we are going to install part number 18252. To wire the vehicle up we are going to have to get to the back of the tail lights and the wire harness is ran up behind here and into the tail light. We are going to have to go to both sides of the vehicle and right now we are looking at the driver side. What we are going to do is take off the fasteners that hold this cover in place so you can get back to the wires. You can see the wires that go in the tail lights will be pretty easy. We will peel back the electric tape so we can get access to the wires. We have got the wires bare, now we will test which wire does what function. First we will start of with the running lights. The kit comes with a supplied light tester so that looks like the running light circuit so that is going to be brown so we will hook up our wire to the 4-pole and the running light on the 4-pole will be brown also. Slide on the scotch lock that comes with the kit and run the brown wire next to it and we will squeeze it with the pliers and we are good to go. 01:04

Now we will look for the left turn signal and that will be our left turn so we will hook up the yellow wire to the green wire. Next we will work on the ground and that will be the white wire and we are going to use a ring terminal to attach to that and just attach to the sheet metal right here. Next we will peel back the green wire and we are going to run that over to the passenger side of the vehicle and make the same connections again. Turn on the right turn signal and check the green wire again and see if that is the same on both sides. It looks like that is the right turn signal and we will make our connection there too. To use the harness with the trailer just pull out a little bit of it and just stay away from the latch and just shut your trunk on it. Then you can pull out what you need down to your trailer. When you are not using it just keep it inside the trunk. There you have it for part number 18252.

1978 Van by GMC Owners Who Purchased This Custom Fit Vehicle Wiring,Wiring Also Bought...

Hitch Ball with 1-7/8" Diameter and Short Shank, 2000 lbs GTW - Chrome $6.49

Hitch Ball with 2" Diameter and Short Shank, 3,500 lbs GTW - Chrome $6.49

Quick Splice Wire Connector - Tan - 14-18 AWG (Qty 1) $0.13

Quick Splice Wire Connector - Yellow - 10-12 AWG (Qty 1) $0.63

Jacketed 2 Wire, 10 Gauge, Brake Wire - per Foot $1.21

Ask the Experts about this Draw-Tite Custom Fit Vehicle Wiring,Wiring

Is there a Custom Fit Wiring Harness for a 2009 Smart ForTwo
Currently there is not a direct plug in harness for the Smart Car. The correct wiring harness is the 4-Pole Hardwire Kit, item # 18252, which includes a circuit tester to find the correct circuits on the vehicle to connect the trailer wiring to.
view full answer...

How To Install 4-Pole Hardwire Kit 18252
The 18252 hardwire kit needs to be cut and spliced to your vehicle taillight assembly wires. I have included a link to a video of a hardwire install on a 2000 Dodge Neon. There are plug and play type wiring harness that are easier to install for some vehicles. I would be happy to confirm what the best wiring option is for your vehicle, if you write back with your vehicle year, make and model.
view full answer...

Recommended Receiver Hitch and Trailer Wiring Harness for 2007 Ford E350 Van
The highest rated hitch available for your 2007 E350 would have a 10000 lb towing capacity. With the use of a weight distribution system, the capacity can be increased to 12000 lbs. I would recommend the Curt Class IV Receiver, part # 14055, which will use existing holes in the van frame. We offer the wiring harness with trailer connector, draw bar and trailer balls to complete your towing system, but they are not sold as part of a package. I would recommend the following: Wiring Harnes
view full answer...

Trailer Wiring Harness Installation For a 1995 Chevrolet S-10 Pickup
If you have the bare wires that are connected to the vehicle lighting circuits, but just need the 4-Way connector, then you can use the Draw-Tite 4-Way Hardwire Kit, part # 18252, that you have referenced. This will tap into your loose wires and give you a 4-Way connector on the rear of your vehicle. To add a complete wiring harness and 4-Way trailer connector, you would need Tow Ready Custom Fit Vehicle Wiring, # 118312. I have included a link to the installation details below. To protec
view full answer...

Installation Procedure For Draw-Tite 4-Pole Hardwire Kit # 18252 On A 2008 Ford F-150 Crew Cab
To install the Draw-Tite 4-Pole Hardwire Kit Including Circuit Tester, part # 18252, on your 2008 Ford F-150 you will need to access the wiring harness behind each tail light assembly, starting at the drivers side. Activate the left turn signal, and use the tester included in the kit to probe each wire going into the tail light assembly. Once you find the wire that makes the tester blink with the turn signal, tap the yellow wire for the 4-pole wiring harness into that circuit using the quick spl
view full answer...

Trailer Wiring Harness for 2008 Hummer H3 Alpha
If your Hummer has the tow package, you can use the Multi-Tow 7-Way and 4-Way Trailer Connector, part # 30955. This connector would plug into a socket located below the cargo area. This connector can accommodate either a 4 or a 7-way trailer connector. If your Hummer does not have the tow package, there is not plug and play type option available. The 4-Pole Hardwire Kit, part # 18252 would be your best bet. Installing this connector is pretty simple. Access the rear of your tail light ass
view full answer...

Ford F-150 STX 4-Way Trailer Wiring Harness Installation
Wiring your 2007 Ford F-150 STX for towing a trailer with a 4-Way flat connector should not be too hard. If you look under the truck along the inside of the drivers side frame rail you may see a connector that has wires running to it. If so use a circuit tester, item # 3808 if needed, and make sure the trailer lighting functions are working to this connector. If the circuits are live to this connector then the Plug-N-Tow (TM) Vehicle Wiring Harness, item # 40185, will work on your vehicle. Most
view full answer...

Installation of 4-Way and 7-Way Trailer Wiring Harness on a H3 Hummer
If your Hummer H3 has the factory tow package wiring, most do, the Replacement Multi-Tow 7-Way and 4-Way Trailer Connectors for Ford, GM Trucks with Factory 7 Way, item # 30955, will connect to a round connector found above the rear spare tire. This connector will supply 4-Way and a 7-Way trailer wiring at the rear of your Hummer. If you do not have the factory tow package wiring on your vehicle, you will need to use the 4-Pole Hardwire Kit Including Circuit Tester, item # 18252, that you ref
view full answer...

Recommended Trailer Hitch and Wiring for a 1999 Mercury Mystique
For your 1999 Mercury Mystique, I would recommend the Hidden Hitch Class I Receiver, part # 60979. The draw bar is included with the hitch, as well as the installation hardware. I will provide a link below to the installation instructions. You will need the appropriate trailer ball, if you do not already have one. The coupler on your trailer should have the necessary ball size stamped on it, which should be either 1-7/8 or 2 inch. For a 1-7/8 inch ball I would recommend part # 19256, for
view full answer...

Recommended 4-Way Flat Wiring for a 1995 Toyota Pickup
Yes, a tail light converter would be required to wire your 1995 Toyota pickup for towing. We offer custom-fit T-connector # 118379, which would plug right into your factory connectors behind the vehicle tail lights. I would recommend that you double check the trailer plug, however, as it is common that boat trailers use a 5-Way plug, due to being equipped with hydraulic brakes. If this is the case, you would also need a 4 to 5-Way adapter for your pickup, like part # 20036. The adapter wou
view full answer...

How To Install A 7-Way Trailer Connector On A 1994 GMC Jimmy
To install a 7-way connector on the back of your vehicle you will first need to install a 4-flat connector and then use the Brake Controller 7 & 4 Way Installation Kit, # ETBC7, to hardwire a 7-way connector to the your vehicle. If you have the full size 1994 GMC Jimmy you will need to install the Tow Ready T-One Wiring Harness, # 118319. This will give you a 4-flat trailer connector at the rear of your vehicle. If you have the smaller 1994 GMC S-15 Jimmy you will need to use the Draw-Ti
view full answer...

Trailer Lights Go Out When I Apply Brakes on Tow Vehicle 2002 Toyota Tundra
It sounds like there is a bad ground connection somewhere on the trailer because your lights are working when they are not put under a load. Whenever your tail lights are on and then you apply the brakes, the system is under max amp load, and with a bad ground the lights cannot support all the amps. I would start by checking the ground connections of the tail lights on the trailer to make sure there is a good connection to a clean metal surface. You will also want to inspect the wires to make su
view full answer...

Installing a 7 Blade RV Plug For Towing with a 2000 Chevrolet Silverado 1500 W/O Factory Tow Package
We have installation instructions and videos online for installing a 7-Way RV trailer connector on your 2000 Chevrolet Silverado. The videos will be a good reference, but you will have to run a couple extra wires to the rear of the vehicle, since your truck does not have the factory tow package. If you are installing a brake controller, you will also need to complete some wiring under the hood and select a brake controller along with the correct, under dash, wiring harness. I would recommend
view full answer...

Which Vehicles Wires Are Used When Attaching A 4-Way Trailer Connector To A 2005 Ford Focus Wagon
You will need to find the vehicles wiring harness that goes to the taillights on your 2005 Ford Focus Wagon. You will need to use a circuit tester like the Quickee Tester, part #3808, to probe the wires and find the correct functions for connecting the wires from your 4-way trailer connector. I am including a video link of connecting a 4-way trailer connector to a 2006 Ford Taurus. It will show you how to probe the wires and how to connect them. On the Ford vehicles the wire colors are as fol
view full answer...

Brake and Turn Lights Not Working when Trailer is Plugged into the 4-Way on a 2009 Saturn Sky
I would not recommend to replace any of the relays on the 2009 Saturn Sky. If you are having a wiring problem and the relay is activating, it is doing that to protect your vehicles wiring system. You do not want to change the relay and allow more current to get to your wiring system, which could cause major damage. The relay is doing what it was designed for. It sounds like it is a ground issue with the wiring on your vehicle. You will want to make sure that the white (ground) wire is attache
view full answer...

Installing the Draw-Tite Wiring # 18252 On My 2003 Chevrolet S-10 Blazer
Yes, the left and right turn signal wires also carry the brake signal on your 2003 Chevrolet S-10 Blazer. If you wire the 4-pole, part # 18252 to the correct wires you will get the brake signal on your trailer. On the Draw-Tite Wiring, part # 18252, you will need to use a circuit tester # 3808 to connect to the correct wire function. On part # 18252 connect the White wire to a clean metal surface for ground, Brown to the running light circuit, Yellow to left turn and brake, and Green to right
view full answer...

Availability of a T-1 Harness for a 2008 Hummer H3
As your H3 was not equipped with the tow package, the Hardwiring Kit you referenced, part # 18252 is what you would need. I have provided a link to an install video you can refer to for assistance. The video shows the 4-pole being installed on a different vehicle, but the procedure would be the same. You would use the tester to probe the wiring behind your tail light assemblies, to determine which circuit to tap each wire of the harness into. have a helper activate the right turn signal, and
view full answer...

Will Draw-Tite 4-Way Hardwire Kit # 18252 Fit a 2003 Chevy Cavalier
The wiring system on your 2003 Chevrolet Cavalier is a 2-wire system, which means you do not need a wiring harness kit with a converter box. A converter box is only needed if your vehicle would have separate wires for the brake and turn signals. The Draw-Tite 4-Way Hardwire Kit, part # 18252, will work on your 2003 Chevrolet Cavalier. This is a standard 4-Way wiring kit that will tap into the tail light wires by function. It includes a circuit tester that will allow you to test the wires on y
view full answer...

Running Lights Not Working After Converting 7-Way to 4-Way on a 1991 Ford Bronco
So if I understand correctly, the 1991 Ford Bronco you have has a 4-Way flat trailer connector. It used to have a 7-Way and you are trying to use the wires from the 7-Way to connect to the 4-Way connector. In order to find the correct wire for the running lights, use a circuit tester, like # 3808. Have someone sit in the vehicle and operate the lights while you test the wires. The one that carries a constant signal when the lights are on is the running light circuit. On a 4-Way, the exposed p
view full answer...

Trailer Lights Work When Towed By Tahoe But Not When Towed By Ford Truck
Although it would seem that you have eliminated the trailer wiring as being the problem, taking a quick look at the trailer wiring would be a good first step. Start at the trailer connector, and work your way back the trailer until you reach the lamps. Look for pinched wires or wires with cracked or worn insulation that would allow a short to ground. You might have a minor short that is not affecting the Tahoe, but is causing problems with the Ford. Examine the lamps themselves for rusted bulb s
view full answer...