Customer Came to me asking to update their fox body LS Swapped mustang. As you can see the dash was an absolute disaster, wires going all directions and the old chassis harness sitting there unplugged.

The interior of a car with exposed wires and electronic components, with a caption 'Before any work done'.

A lot of shops believe this type of work is acceptable. The wiring may function but the harness should reflect quality in appearance. When I build a harness I do my best to make sure it looks just as good as the car that it’s goin in. You won’t see work like this from me.

An electrical wiring harness with various connectors, a black module with multiple switches, and a black rectangular component, all placed on a light-colored floor.
Close-up of a vehicle's fuse box with various colored wires connected and the dashboard partially visible in the background.

Where it starts

The first step in updating this customers wiring set up is the heart of the whole system. I Decided to go with a Eaton Busman fuse box to replace the old one they had. New circuits with wire gauges reflecting the amp draw required. I set up the fuse box so all fused accessories became key on. We moved his Trans fans and intercooler to a relay controlled by a rocker panel.

The next step was updating his chassis harness, since the wiring was getting older there was corrsion found. I tore the harness apart and built a new harness that would connect to the fuse box built.

Medical devices and tools, including scissors, on a black quilted surface.

Lastly we wired and installed everything back together. Tested each circuit before finishing the job and got the customer back on the track!

Interior of a vehicle with a racing steering wheel installed, no dashboard cover, and some tools and parts on the floor and seat.
A silver modified car on a drag strip at night, with the number 730 written on the windows, and a black hood with a vent. The background shows trees, signs, and a track timer.