DISCLAIMER: I assume no responsibility for any damage you may cause by following this guide.
I am starting this post to document how I hooked up my reverse lights using the factory wiring. It took me a bit to figure this out, and one blown reverse switch, but I have been running them for a little over a month now with out any issues. I am considering these instructions complete. If you feel I have missed something or need something clarified I will do my best to correct this post
I chose the yamaha OEM omron relay as it is diode protected and it comes with the under the hood mount for a clean install. A bit pricey but worth it to me. I would be willing to bet yamaha uses the same relay in their reverse light kit. Yamaha uses Sumitomo MT Sealed connectors. To do this install nicely, using the same connectors is a good idea. I found a source for them but haven't gotten around to using the 4 pin connector yet. I used a couple of LED work lights I found on amazon. You can use whatever lights you choose. The thing I like about these lights is they mount nicely under the bed on existing bolt holes. Not sure the bolt size,I just happened to have a couple that fit perfect. In addition to the parts below some wire, recommend 4 different colors, will be required to make a pigtail for the relay. some soldering and/or crimping skills are required. Heat shrink is also recommended but you may be able to get away with electrical tape.
Qty 1 RELAY ASSY (G8HN-1C4T-DJ-Y52)
Item 45 on rocky mountain atv electrical 1 schematic part # 5DM-81950-00-00
Qty 1 Sumitomo MT 090 2 pin female connector
Qty 1 Sumitomo MT 090 4 pin female connector
There is a Sumitomo MT 090 4 pin male connector located under the passenger side wheel well.
The idea is to make a relay that plugs directly into this connector.
soldering wires to the relay and protecting them with heat shrink, and assembling the mating connector on the other end.
I have not done this myself yet but that is my end goal.
what I did temporarily is use insulated quick connects to wire to the relay, it works but it's ugly.
There is a Sumitomo MT 090 2 pin male connector located under the rear of the bed
The idea is to make a light(s) that plug directly into this connector.
A plug and play reverse light system that can easily be undone and looks professional.