The air brake switch is behind the main instrument cluster and has the black air line going into it

The 1/4“ Tee with inserts and teh 1/4” x 1/8“ coupling insert from Home Depot. The 1/4” airline I had laying around.

The original 3/8“ TEE, Coupling and Air transducer from BrakeSmart Kit

The coupling adapter all wrapped with Teflon tape ready for 1/4“ x 3/8” coupling adapter.

The original 3/8“ TEE(left) is replaced with a 1/4” TEE, a 1/4“ x 3/8” coupling and a couple of pieces of 1/4“ air pressure line.

1/4“ TEE inserted in air line to air brake switch. The Brakesmart transducer will be routed behind the dash after testing.

Topdown view of Fuse/Relay panel under the CB radio tray. The circuit braker to power the Brakesmart controller is directly below the left brass ferrule below the opening.

CLoseup of the fuse/relay tray. FYI, the relay with the yellow sticker is the Daytime Running Lights (DRL) relay. Not important to installing the Brakesmart controller but it is an item that comes up occasionally in the forums.

The heavy RED wire goes to the Brakesmart controller to tell it when the original brake light switch becomes activated.It is not optional.

This heavy red wire is the +12VDC supply for the Brakesmart controller. It will be plugged into a free 12volt fuse position in the fuse panel above it.

The auto reset circuit breaker is mounted to the frame of the electronics bay below the main fuse panel (green front edge directly above it).

A better view of the Circuit breaker mounted to the electronics bay frame below the main fuse panel. The red wire will be plugged into an empty fuse position in the panel.