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Trailer ABS issues

Tomcat588
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Tomcat588 Newbie

Tomcat588

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I have a 2005 CX Vision which was formerly a Air Products truck and it is used to pull a 2003 Timpte Hopper. I had the local Mack dealer rewire it with a replaceable pigtail instead of the hard wired one. Now my trailer ABS light on the trailer is constantly on, and the ABS trailer light on the dash is on. Timpte has checked my trailer and it is OK. They tell me the ABS is working, but the ABS lights are not working because of the truck. Mack says it is wired to spec. I know if DOT sees it I will be cited. Even though Timpte says some trucks are not compatible, I think I have a wiring problem as it was working before. How can I determine which wires are not lined up properly on the buss bar or if there a wire missing?

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