I'm 100% done with the system. I got my airline, fittings, and Loctite 545 in the mail on Monday and finished up the final plumbing. I flipped the switch on to start the compressors and nothing happened. I started checking fuses, all were good. Then checked the relays, both were functioning correctly. Checked voltage at the distribution block, relays, and compressors, everything was showing 0V. When I turned the switch off then I had 12V at the distribution block and one side of the relay, just as I should. Turned the switch back on, and 0V everywhere. Check fuses again, two on the distribution block and one at the battery, all ohmed out good. I was frustrated and tired so I called it a day. I went to school for electrical engineering, I shouldn't be having these problems.
Went back out yesterday with a clear head and it was obvious what was wrong. With the switch off, I had 12V right after the fuse at the battery, but with it on, it went to 0V. I replaced the 60A glass fuse and the compressors fired up. Not sure why I didn't try this the day before. I've never seen a fuse that would ohm out good but be open when a load was applied. Very odd...
I then decided that I didn't like the location of my quick connect, so I got some 1/4" air hose and routed it to the rear of the truck. It's mounted to a strip of aluminum and covered in plasti-dip. I covered the quick connect with a rubber table end I got from the hardware store. I used hose barbs and hose clamps for this connection, I hope it doesn't leak over time. If it does, I'll replace it with some DOT airline and compression fittings. So far, I don't see any leaks. I'll let it sit for a few days then see if I've lost any pressure. Fill time from 0 psi to 145 psi was just under 3 minutes. I've got my tire inflation gun and about 20' of air hose that I will keep in the truck. This will reach all of the truck tires as well as the tires on most trailers.
