Well, thought I’d start a thread with my install on a 1995 Dodge Ram 2500.
I managed to mount both pumps and my tank on a piece of 3/4" plywood painted to match the truck.
I used a 100A fuse up in the engine compartment and ran 0 gauge wire back to the bed. From there a distribution block brings the gauge to 4 and each pump is fused with its own 50A fuse.
Here are the horns, everything was taken apart and rebuilt, then the horn was mediablasted and powdercoated
I mounted a pressure gauge with 2 switches on the dash, I’ll get pics tomorrow. One switch is for the compressors, other switch is for my tank drain.