From your description, and the results of your testing it sure does seem like you have a poorly conducting positive cable. You could try putting a jumper cable from the positive side of the battery to the starter and then try to start it up. If this improves the starter's function then you...
Depending on the panels you use and whether or not you will have access to the inside of the panel cavity will make this difficult to use install or remove the panels. You could screws that bite into the existing plastic sockets but they will likely spin.
You are likely looking for something...
If you’re not getting a good bite with Rivet Nuts there are other things to consider. The hole could be too large for the fastener, the tool was not setup properly to compress the rivet sufficiently. You could possibly uses a washer on the back side to get a tighter hold if you really thought...
I designed and 3D printed a threaded mount for some Anderson connectors that fits in the hole next to the inspection lamp socket . I used spade connectors so I could reuse the existing wiring that ran to the socket without cutting into it. I plan on using this for some auxiliary radios, on...
I like the idea of a strip across the top or one on either side of the latch on top. I agree with others that the stock location is all but useless to actually see inside of a moderately full glove box.
I always wondered how well dynamat and similar foil covered sound deadening materials would do on a roof with the potential for high heat. I would think there’s a good chance it could come loose and make a mess.
Edit: a word
You mean this seal?
https://www.cityracerllc.com/collections/land-cruiser-60-series/products/rear-lift-gate-lower-weatherstrip-for-land-cruiser-fj60-fj62