Thanks!
Here's a few more of the finished product, showing the vent fitting above the brake booster and all the wiring completed.
Manifold fittings from left to right-
85psi-105psi relay/pressure switch--pressure relief valve--
ARB switches IN line--
Air Tank supply line--
pressure gauge-
supply line from compressor--
female quick connect air fitting
Finished shot of 2 Gal air tank.