tony.latham wrote:But you are getting 12.8 volts at the wires at the light, right? And there isn't any resistance with these two positive wire runs, right?
If I understand it, the only time a fuse blows is when one of the light fixtures is hooked up, correct?
Buy a different type of light.
Tony
Pchast and Tony,
I will try my best to address your questions..
Tony, correct to all those points except I tried my galley light and it blew the fuse as well.
Again, a bit of background. It makes no sense to me but I do have this problem. Clearly I did something wrong along the way and there is an issue with the positive side.
This is a woody build. The point being there are no fasteners in the vicinity of the wire run that I can figure.
I followed the book with the exception that to error on the side of caution I moved the wire channel out away from the wall about 3 1/2 inches because the wall was the only place that would get crown staples (3/4”). Everything else was fastened with a T50 stapler and those were removed when the glue dried.
I placed the headliner in before wiring and removed the few staples that missed the spars before wiring.
Using a Blue Seas block and these were the first runs from the block to a location. The shortest runs there are with the exception of the fan. An individual black and red and their own fuse for each light. Also the lights are in two separate bays, one in front and one behind the roof fan and well back from those doubled spars because I knew I would be using crown staples around the hatch.
It was not a digital meter but it was sensitive. It showed no resistance in any of the four wires. Two to each light.
All these lights work away from these two locations (well except for the one I hooked directly to the battery to see if they had the positive and negative marked incorrectly. That ones switch no longer works. They were marked correctly. They work great at other locations and are really nice lights.
Using the positive wire inside the roof and a new negative wire strung from the block to the lights locations blows the fuse. Using a positive wire jumper and the negative inside the roof and everything works. Go figure…
Maybe a digital meter would identify the problem but it is not possible to run another wire inside the roof and I am not willing to place a wire channel on the exterior of my headliner. It looks too good right now. Maybe down the road after I have beat the hell out of it with use or I get tired of buying batteries (unlikely).
Gremlins perhaps…
Ralph