The problem with the marker interrupt switch for all/most makes of tractors(not volvo specific) is there is no standard for wiring trailers, one trailer mfg may wire it to power just the top lights, another mfg will put it to half the rear, or full rear, etc... and then there is the half arse mechanic that is desperate to find any power for lighting that f's everything up and only blinks your license plate light.
It would be smart for tractor mfg's to cut the power to all lights but brake and turn with that switch, but I don't know of any way to reprogram it to do so.
Marker interrupt
Discussion in 'Volvo Forum' started by flightwatch, Apr 13, 2016.
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