Hello, I've just got a 65 Mustang that is in pretty good shape. The only thing that is baffling me is the instrument lights don't work. I've got two separate headlight switches from CJ pony parts. Headlights work, but only one instrument light works, appears that it's wired independent. When I check for power at the fuse box, there is nothing on the 12v tester when acc is on. This tells me that power isn't making it to the fuse box. The fuse box is a pain in the ass to get at, and from there going backwards, I have no idea where is losing power. Thanks in advance for your help!