My
Trillium is just wired for a four way plug, although the main harness is set up for seven wire operation. The old 41 year old four way plug was beat and not hooking up well. Myself, I prefer the round seven way plug anyway, so I did the swap.
The original harness had obviously drug on the ground, so that determined where I was going to cut it. I picked up a seven way plug, with a four foot cord and a waterproof junction box on eBay for $19.99. Since the box alone goes for over $10, I thought it was an excellent deal. Longer cords can be had for more $$, but I didn't need a longer cord.
I mounted the box to the side of the frame near the tongue. I have about 16 inches of cord beyond the center of the hitch ball, so that should be more than enough. I only hooked up the four wires. The rest end at the box.
One nice thing about this setup, if the cord or plug ever has a problem, just attach a replacement into the junction box.
Hard to see, but red wire is worn down to the copper:
1977 Trillium 7 way plug by
wrk101, on Flickr
New junction box (capped off wires are extras from the trailer):
1977 Trillium 7 way plug by
wrk101, on Flickr
Approximate cord length beyond the trailer:
1977 Trillium 7 way plug by
wrk101, on Flickr
My Solo Trillium
Caddy Shack
Linear Mode
