Hopefully quick and easy one. Wiring should be standard across brands etc., but for clarity, the truck in question is a 2015 FL Coronado, factory Coronado (not glider).
In the diagram, the black wire is marker clearance, and the brown is tail. On other trucks with the "intermittent" switch, the black wire is intermittent to flash your markers in reply. For some reason, this Coronado has both the black and brown doing the intermittent action.
Is this a common thing with Freightliner, or has someone made a shadetree hack that I need to find?
2015 FL Coronado Trailer plug, marker intermittent switch?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Deezl Smoke, Mar 20, 2025.
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Fixed it. Pictures did not turn out, so I drew up this. Pull the delphi connector from the back of the switch, and while looking at the connector from the switch interface, the lower left and center right wires needed to be jumpered together bypassing the switch. Works as it should now.
Oxbow, ducnut, SmallPackage and 1 other person Thank this. -
If you don’t have one of these, they’re quite handy.
https://a.co/d/6fTopVz
Oxbow and Deezl Smoke Thank this.
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