My son just had the same thing on his 74 with the full LED swap. He bought a reverse polarity plug for the relay and it fixed it right up. You can use jumper wires to see if it works before buying the plug.
From one father and son build to another Congratulations Easton. The skills you learned from your build will take you along ways in life, it is things you do not get from sitting in front of a screen. I'm sure the time spent together will be cherished by both forever.
Ryan graduates next...
Could be tough to find they are fairly rare. Best thing would be if you could find a donor vehicle. We just finished up our 74' and lucky it was still in good shape.
We just finished up our wood bed and went with the routed edge to bring the rails down flush. I think it turned out well. That Black Walnut will be as hard as our Wenge to router.
$250 cdn, from an estate sale. Now mind you I did have to go out of my way and drive a whole 1-1/2 hours to pick it up ;). Two days later my son and I had it running and drove it around the backroads.
Here is where we are at with it today.
We had to get ours inspected for insurance purposes not for the registration. If you can get insurance without the inspection they should have no problem registering it.