by angib » Tue Mar 21, 2006 3:38 pm
Sorry, that was a bit cryptic. It's my experience that you need to be very sure your 'sealing' method will work otherwise the 'seal' becomes a way of holding in crud.
Crud, water, whatever seems to have this magical property that it can find its way in past a less-than-perfect seal, but not out past the same seal, unless it's a really good seal - which usually means a good quality, purpose-designed (and expensive) one.
My preference for under-trailer wiring is to use conduit just as a very long cable clip - no end caps, seals, joints, junctions, etc.
Andrew