I have just completed re-doing the interior 12 volt system on our 1978 Trillium
1300. The old wiring was a mess. Everything was wired with too light
a guage wire. With more than one light
on, the volts droped to a dangerous level. I also wanted to switch to LED lights
. So, I decided to gut the whole thing. I removed all the lights
, switches, wiring and the old converter. I carefully disconnected the Fantastic Vent/Fan - new last Spring. I used 12 guage stranded wire for all leads. I replaced the lighting
with LED's from Autolumination
. I installed five Jumbo 24 LED fixtures around the cabin and three 28 LED fixtures under the cabinet above the kitchen area. I installed toggle switches for all lights
. I left the outside light
alone for now, except for running new lead wires to it. I installed a new Iota
DLS 1215 Converter/Charger.
During the course of my research and planning, I struggled with coming up with a schematic for doing the re-wire. I read Managing 12 Volts
cover to cover; I scoured the FGRV Forum for tips and schematics; I checked books out of the library. Finally, I constructed a plan and drew up a schematic that I could work with. After I gathered most of the parts and tools necessary, I started the project (this took over 5 months!).
The gutting of the old system was fun. (I love demolition!) By the time I had all the lights
out and carefully removed wires I had a good sense of how the trailer was
wired. I also discovered that some wiring bundles were shared with wires for the exterior lights. That made me nervous.
First I installed the new converter/charger, placing it in about the same spot as the old one.
Next, installing the Jumbo LED's was fairly simple. I mounted them flush under the shelving. The tricky part was drilling bolt holes in just the right spots (4 per light). I mounted the lights with hardware I got at Home Depot that was the correct size for the screw holes, just long enough for a nut and washer, so there is not much protruding through the shelf. I taped over all of the bolts/nuts.
See "Part Two"