Tina-Jim Posted 5 hours ago Report Share Posted 5 hours ago (edited) Greetings, The Bride and I have decided to borrow our Daughters TT. Since we only just have the truck for now, and the 'permanent' 5th wheel has not yet been acquired. The question: Can I simply tap in to the tractor wires at the rear turn/brake/run to get lights only on the TT. Again, it is small unit, no built in brakes. This is a temporary configuration, to get us to/through the HDT RALLY. (2020 Volvo VNR). Thoughts? Travel Safe, Tina-Jim Edited 5 hours ago by Tina-Jim Updated title. Quote 2020 Volvo VNR 640; D11, i-Shift, 3.08 (to be singled) Link to comment Share on other sites More sharing options...
Jaydrvr Posted 4 hours ago Report Share Posted 4 hours ago You'll need a separate adapter to convert from the tractor to trailer. The tractor has separate turn and stop circuits, the trailer doesn't. You can use a cheap diode converter from an auto parts store for short term use. The Jackalopee is the better long term fix. Jay Quote Link to comment Share on other sites More sharing options...
hatrack Posted 2 hours ago Report Share Posted 2 hours ago (edited) Tina-Jim, Have very similar truck to you. This is the wiring at the plug at rear of truck. Turn and stop are together here unlike trailer plug. Ken.... Edited 2 hours ago by hatrack edit Quote 2024 DRV Fullhouse JX450 2017 DRV Fullhouse JX450 2020 Volvo VNR 42-640, D13, 455hp, Ishift, 189"wb, factory single, ET Junior Hitch @ 195", Jacklopee, Directlink 2016 GMC 3500 Denali DRW, CC, LB, Curt 25k, Sold Link to comment Share on other sites More sharing options...
Av8r3400 Posted 1 hour ago Report Share Posted 1 hour ago 1 hour ago, hatrack said: Tina-Jim, Have very similar truck to you. This is the wiring at the plug at rear of truck. Turn and stop are together here unlike trailer plug. Ken.... This may cause your lighting module in the tractor to get upset because it will draw more current for the running and turn signals than it wants to see. I would suggest at least you will need a Chineesium wiring converter off the trailer plug. You will eventually need a Jackalopee why not just get one and use it. Quote Av8r3400 Thunderstruck - 2012 Volvo VNL 730 D13 iShift Slick - 2021 Grand Design Momentum 397TH I'd rather die trying to live - Than live trying not to die. -Leonard Perry Link to comment Share on other sites More sharing options...
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