Installing a 7-Way Trailer Connector on a 2003 Dodge Ram 1500 With 4-Way Wiring Harness

Question

Question:

I cant find the plug for the quick connect on a 7 pin HM42190 on my 2003 dodge 1500 Ram pickup 5.7 quad cab. It looks like the 4 pin was hardwired in, and as far as I can tell everything if factory.

asked by: Anthony

0

Expert Reply:

On my 2004 Dodge Ram (which would be the same as your 2003) the factory trailer connector plug split off from a larger wiring harness on the inboard side of the drivers side frame rail near the rear bumper. There should be a rectangular connector that matches the black connector from the Hopkins Endurance 7-Way Trailer Connector, # HM42190. It may be possible that your truck did not come with the factory trailer wiring for a 7-way trailer connector. That was an option on those trucks from the factory.

If you do not have that connector, then you will need to hard wire a 7-way trailer connector. For this, I recommend the Universal 7-way and 4-way Installation Kit, # ETBC7. Your existing 4-pin trailer connector will plug into the 4-pin connector on the 7-way adapter and you will only have to run the wires for the 12 volt power and electric brakes.

I have attached installation instructions and an installation video of this kit for you to check out. The truck in the video is a 2001 Dodge Ram, but the installation process will be the same. The installation kit will include all parts and hardware necessary to complete the installation.

If you are also interested in a brake controller, I recommend looking at the Tekonsha Prodigy P3 Brake Controller, # 90195, which I have attached below.

expert reply by: John H

0

Answer 1

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Answer 2

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Answer 3

We have everything you need to install a brake controller on your 2004 Dodge Ram. Since your truck does not have any factory trailer wiring, we will want to install a trailer connector first because the brake controller will tie into the trailer…

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Answer 4

Yes, it is very possible to install/fit a 7-way trailer connector on a 2004 Dodge Ram 1500. I first recommend looking under the vehicle for a square ten pin connector. This (if present) will be located behind the rear bumper near the spare tire and…

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Answer 5

You can add a 7-Way trailer connector and retain the use of a 4-Way as well by installing #37185. The 4-Way you have will plug into the 37185 and the remaining wires would have to be hardwired in. The white wire grounds to the truck frame. Black is…

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Answer 6

The remaining wires from the 4- to 7-Way adapter #37185 will need to be hardwired in to your 2003 Dodge Ram 1500 to make the 7-Way fully functional. The blue wire is for electric brakes, black is for 12 volt power, and purple is for reverse lights.…

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Answer 7

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Answer 8

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Answer 10

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Answer 11

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Answer 12

Sounds like the brake controller wiring you found under the dash of your 2004 Dodge Ram 1500 doesn't run to the rear of the vehicle. I would be shocked if any of the circuits are active though on that connector as everything we know on your…

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Installing a 7-Way Trailer Connector on a 2003 Dodge Ram 1500 With 4-Way Wiring Harness

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