ABS Lights & ARS

[snailexpress]

(11-24-2020 )GAguy912 Wrote:  Ok guys I changed out the pigtail and the light (Trailer ABS) will come on when brakes r applied and go off when brakes r let off.

You have no 12 volts on central wire for trailer ABS module power. Trailer ABS uses stop signal light power as a spare power source.
Check 12 volts on central pigtail wire, if 12 volt present the problem is on trailer side.
If not, check pigtail, trailer power supply relay and wiring on the truck .