I bought two LED taillights specifically because they include a Reverse/Backup Light function:
I want to use these as temporary-mount lights, when my hitch-mounted bike rack (loaded) obscures my Ford E350 van taillights.
Each light has a 5-wire pigtail, a few inches long where BLACK - Negative, RED - Brake Light, GREEN - Taillight, YELLOW - Indicator, WHITE - Reversing, with butt-ends on the 5 wires.
I was planning to use/customize a 5-flat trailer-side wishbone wiring kit (e.g., part # A25W5B) to wire up the taillights. I’d then use any 7-pole to 5-flat adapter to connect with my 7-pole vehicle outlet.
Main challenge: Most “wishbone” flat-wire trailer kits only send two wires in each “taillight bundle” [e.g., One tail light wire (brown) is bundled with left turn and brake wire (yellow), and one is bundled with right turn and brake wire (green)]. If I use this sort of 5-flat trailer wishbone kit:
1. Do I mate the appropriate functions from light to wishbone-bundle by splicing together, e.g. for the left light:
- Yellow (left turn/brake) from the wishbone bundle, spliced with …
- Yellow (indicator) and Red (Brake) from light pigtail?
What would be the best waterproof way to splice this? Can I connect all three wire ends in one spot?
2. Do I splice a second blue wire into the trailer side 5-flat connector, to create a blue wire “wishbone” (like the brown wire / taillight wishbone) to connect to the White (Reverse) wire on each taillight? (Why don’t any 5-flat trailer wiring kits make it easy to set up the blue-wishbone option for reverse lights?)
3. Would it be easier to just run a full 5-way flat wire out to each light, since the Light’s ground/negative wire also needs to go somewhere? Can I make the lights a little more “plug and play” with typical wishbone wiring by putting a connector of some kind on the 5-strand light pigtail?
4. Would it make more sense to install a 7-pole trailer-side wiring kit, in terms of fewer components/splicing/tweaks? Wouldn’t I have the same wish boning challenges?
5. Can I just crimp butt-end connectors and tape to splice, or should I solder these connections? This has to work for 2-3 weeks, but I could do a more permanent job later if they prove not waterproof enough.
Thanks for any tips!