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Old 07-11-2019, 12:40 PM   #1 (permalink)
FloridaZ
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Switch from 7 to 4 Pin... Possible?

I have an old trailer I used to pull with my 06. All lights work fine. I hook it up to my 19 and get the "Check Wiring" on the dic and the bells that won't stop. I researched it and I guess the 7 pin looks for the trailer brakes? This trailer used to have trailer brakes but they are toast. I never used them anyway.

Can I cut the 7 pin off and connect a 4 pin so just the trailer lights work to stop the message in the dic and the bells going off?

If not, what type of brakes do I need to put back on the trailer to get the 7 pin to work?

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Old 07-11-2019, 12:41 PM   #2 (permalink)
diesail
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I don't see any reason why switching to a 4 pin connector wouldn't work.

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Old 07-11-2019, 12:52 PM   #3 (permalink)
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Just try a 7-to-4 adapter. They are available at Wally World and almost all auto stores (and of course online too).
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Old 07-11-2019, 01:48 PM   #4 (permalink)
heymccall
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Well, if the trailer has brakes, most likely they'll need to work. IMHO, any trailer load over 3500#, including the trailer, should have working brakes.

To eliminate the message for now, just cut the blue wire on the trailer (preferably in a location that be spliced easily, later on, when you fix the brakes).
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Old 07-11-2019, 03:10 PM   #5 (permalink)
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I thought new trucks had both....
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Old 07-11-2019, 03:16 PM   #6 (permalink)
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Quote:
Originally Posted by 97chevor View Post
I thought new trucks had both....
The connector on my trailer is the round 7 pin.
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