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Old 09-25-2023, 11:45 AM   #1
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Join Date: Sep 2019
Posts: 61
wiring harness schematic trailer to tow vehicle

Hello: MM 2108ES 2018B - recently my 7pin connector became disconnected during travel and the pavement ground it away to unusable. So, I have a new 7-pin plug and harness. Am needing a schematic for the wiring harness connections to the trailer. thank you!
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Old 09-25-2023, 01:19 PM   #2
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try this cursor down!
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Old 09-28-2023, 06:46 PM   #3
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Originally Posted by rgvtexan View Post
That is a good diagram, however, I never tie the brake magnet to the trailer frame. I run a separate ground wire for the brakes back to the 7-pin trailer plug ground terminal-so my connector has 2 ground wires on the ground terminal. It makes for better braking IMO.
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Old 10-04-2023, 05:57 PM   #4
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hi, I don't have knowledge on your question, but here's a tip for when you get the harness hooked up again. I learned this when driving semi's and used it on the glad hands.

Just take a small bungy cord and wrap the ends of plug ins around and hook to somewhere on the frame. That way, if the harness comes out, it doesn't fall and drag to death on the road.
Hope you get back on the road soon,
Baja Soon
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tow, wiring

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