Rewire the trailer?
Wires don't know if they power an LED or incandescent or whatever. They just carry the current, and as you probably know LEDs use less current so your electrical
system will not be as loaded as with the standard bulbs.
You do have to watch for polarity with LEDs.
I actually have all the LED lights
required to replace all the exterior bulbs on my Trillium
, but I haven't installed one yet due to lack of time.
Two years ago I replaced all the exterior bulbs on my popup camper with LEDs. The marker lights were simply a matter of removing the old bulb and insert the LED replacement. For the stop/turns signals, instead of using 1157-type LED, I went with the square SMD type LED and I spliced the wires (not really plug'nplay here, so a little more work). The reason I went this way is the 1157 bulbs were mounted sideways in the fixtures and I wasn't able to find a suitable LED light
with a 90deg angle and a 1157 base.
The stops have 48 red 5050 SMD LEDs (12 for the turn signals) and are VERY bright, absolutely no comparison with the original 1157.
I plan to do the exact same mod on my Trillium
, and I can't see why it wouldn't work.
I bought my LEDs online (Amazon and DX), some people will stay away from buying LEDs at DX and feel they get a much better product when they pay 3 times the price at a certain domestic reseller. I never had an issue with DX LEDs. It's your wallet...