THE ZODIAC Brain Box is a trick little box that takes away all the headache when wiring up a custom motorcycle.
Designed with simplicity in mind, the Brain Box allows you to hook up all your hand control switches, without the need for external relays for things like high beam, turn signals and starter. The other advantage is that the Brain Box allows you to wire your switches directly to earth, meaning you’ll reduce the amount of wires needed to run your electrics.
Measuring 1 x 2 x 3 inches, the Brain Box is small enough to hide under the seat or tank of any custom bike.
Get it from your local Harley parts supplier.