[ShrimpBurrito]

I think the "ultimate" connection in this setting is probably with solder, covered by adhesive lined shrink tubing. For such tubing, I wouldn't get anything other than something made either by 3M or Ancor, the latter of which is a marine-oriented brand.

I just don't like the idea of wire nuts there. In a house which isn't flying through the air at 70mph and subjected to continuous earthquake-like forces and hurricane-like water as happens in a trailer, I just think they've fine. But not for trailer brakes.

I've used solder once, and then when I went to replace them, I decided to take an easier route and use crimp butt connectors, crimped with a size-matched crimper, with adhesive-lined Ancor-branded shrink tubing. They're definitely more expensive than wire nuts, but you only need 4 of them, and so it's really not that much money. So far, so good.

Dave