cracker39 wrote:I'M DOOMED.
Anyway, I can't find a conventional flasher relay like the one pictured in the link above. Under the hood, in the plastic boxes, I find two square plug in items (maybe relays?), one for trlr rt turn and one for trlr left turn, and a 10 amp fuse marked trailer tow. It looks like I'll end up getting the dealer provided plug in connector for the back. I guess it's off the the dealer tomorrow and ask questions.
Get "factory" wiring connector if your truck does not have one..
Sounds like there may be relays driving the actual trailer lamps. Flasher probably controls the relays. did you pull relays to see if turn lamp operation completely stopped (on either side) ..... If you can't find flasher (follow the ticking noise?) maybe there is not a flasher and flasher function is part of computer system.... Sounds like you need to either tap "factory connector" (harness) on rear of vehicle (root around in rear wiring harness find unused connector) or get factory connector and plug from dealer (easiest solution).
Also check online sources to see if there are special harness available for your model trick.... Places online that sell trailer wiring supplies and hitches may list a special harness, that may be your first clue... What is make and model and year of truck?
I know on my late model Chevy truck the trailer lamp system is totally separate from vehicle system... Separate fuses for lamps and relay for controll when brake lights or flashers are in operation even tail lamps... Recently had experience with a newer Ford truck and trailer lamp system seemed to be separate from vehicle, at least the fuse block had fuses labeled for appropriate "trailer" lights.....
Whole problem may be where you tapped into wiring.... You may have gotten into vechicle
wiring and not seperate trailer wiring
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