Wiring the Brake Switch...

Okay Guys,

Here's the next installation in our ISIS Power install video series for our 1955 Ford F100 panel truck. 

We just wired in the brake pedal switch into our ISIS MASTERCELL.  Just like the rest of the switches in the truck, this is really easy. 

Remember that the MASTERCELL works when you ground the input wire.  To make the brake lights in the back of the car turn on, you simply connect the MASTERCELL input wire to ground when you press the pedal.  One terminal on the switch connects to the MASTERCELL input wire, the other connects to ground.  This can be a connection to the chassis or can be through one of the included ground wires in the MASTERCELL input harness. 

We're using a switch that works on the brake fluid pressure. 

When we press on the brake pedal, the fluid pressure increases.  There is a diaphragm internally in this switch with a set of contacts that connects the two terminals together electrically.  One of these terminals connects to the MASTERCELL input wire for the brake lights.  The other connects to one of the ground wires in the MASTERCELL harness.  We used these terminals from Waytek to connect the MASTERCELL 22-AWG wires to the switch. 

There are many other types of brake switches.  They all will wire the same way to the MASTERCELL inputs.  Here are a few good examples.

The last one is my favorite.  We had been making these at Littelfuse since the 1964 1/2 Mustang.  Some of my early projects as a manufacturing engineer were working on the automation machines for these switches.  Remarkably, the switch has remained practically unchanged since the beginning. 

Check out the latest video talking about how to wire this switch into our ISIS Intelligent Multiplex System. 


You can check out our entire video series showing off how we're wiring our 1955 Ford F100 panel truck with our ISIS Intelligent Multiplex System at http://www.isispower.com/ISIS-F100.