Tip: Use a relay and use a waterproof switch conveniently located.
I didn't have any relays handy when I added lights to my canopy on my Mahindra and the lights eventually made the switch unreliable. I have to replace it when I have time- probably about 10 mins after it finally quits! :ashamed:
The upside is you can run a very small wire (thermostat wire, cat 5, etc) from the switch to the relay, so it is very convenient to route the wire and locate the switch.
A lighted switch is highly recommended.
Another tip: Mount the lights snugly, but so they can be tilted and rotated. I used driving lights and they mounted with a stud.
I move them CONSTANTLY depending on what I need to see or what I'm doing.
And I did run my two lights off the rear trailer plug. If I have to run the rear light at the same time, I only do it for very short periods.
ETA: Here is a link for a relay socket to make life easier. Use a waterproof relay.
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=330-080
Good prices at this site, but order a couple things at a time to keep down the shipping costs.
Hope this helps!
- JC