Marlon deck lights and Ford

kylant

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Mar 4, 2011
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for those of you running a Marlon deck on a Ford, how did you solve the lighting issues?
My truck disables the cross traffic alert and the backup sensors. will also occasionally say a turn signal is out. this is with it plugged into my rv plug.

i talked to Marlon and they said I needed an adapter. I bought it, installed yesterday.
what the sent, is just a harness that plugs into the port at the back of the bumper and T's off a 4 way flat. They did not send the harness that plugs into the big white plug on the frame rail. The truck actually has more messages and faults now. It will switch back and forth between trailer connected and disconnected, turn signal faults, turn signal hyperflash, etc... It is worse
Frustrated to say the least.

My truck is a 2020.

thanks for the help
 

Blu Du

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Feb 19, 2008
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Nisswa Mn.
my truck boss blew trailer module in my 2020 chevy. they said the leds dont take enough power. they warrantied it but told me they wont warranty another one so i have been too scared to plug it in again
 
Dec 19, 2016
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I had the same issue, 2020 F250 here. There IS a working harness for this truck - install video here:
Email partus@marlonprodcuts.com and ask for the harness for the 17-19 trucks - I threw out the box and do not have the part number. Send the image below and they should be able to sort you out.

1646692241647.png
 

justinkredible56

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Dec 24, 2007
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Eagle Mountain, UT
I have a 2020 Chevy and the Marlon deck and ran into similar issues because the LED bulbs didn’t draw enough power.

I use this:
And tell my truck it’s an “Accessory/ No Trailer” and it has worked like a champ for 2 years now.

Hope that helps someone else, took me forever to figure it out.
 
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