OffroadZ71
Newbie
Appreciate the replies fellas will double check the grounds...makes sense as I haven't had a trailer hooked to this truck in a LONG time
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I've seen LED's on big truck trailers act weird (staying partially lit, not lighting up correctly, and obviously hyperflashing) on trucks with incandescent bulbs and this has been solved with a digital flasher relay.An LED flasher is only needed if you have LED's on the truck, and your truck hyperflashes.
I have noticed this too. U Haul is going to LEDs in all their trailers, and sometimes I have to try a couple of trailers before getting one the lights work on. They are also made mostly of fiberglass and aluminum, so part of it may be a grounding issue. IIRC LEDs are way more sensitive to this....I've seen LED's on big truck trailers act weird (staying partially lit, not lighting up correctly, and obviously hyperflashing) on trucks with incandescent bulbs and this has been solved with a digital flasher relay.
Couldn’t have said it any better myselfThe converter is only needed if you have rear amber turn signals and red brake lights. GMT400's don't.
An LED flasher is only needed if you have LED's on the truck, and your truck hyperflashes.
Sounds like you have a bad ground on the truck's trailer wiring. Seeing as you stated the trailer functions properly on a different truck.