: The amp/relay module supports 6 high-current outputs (up to 60 amps total) and 16 low-current outputs. Backlit Buttons
: Connect to a switched ignition source to ensure the system doesn't drain the battery when the vehicle is off. Outputs (Multi-Color Harness) cencom gold wiring diagram
If you have a Whelen Legacy or Liberty II lightbar, the changes slightly. You will use the WeCan® terminals. : The amp/relay module supports 6 high-current outputs
These are designed for smaller LED perimeter lights, grille lights, or triggers for secondary relays. Often rated around 2 Amps per line. You will use the WeCan® terminals
A white/black wire that allows the driver to change siren tones using the vehicle’s steering wheel horn. Installation Best Practices
The complexity of the shines here. The unit uses negative switching (ground switching) for most outputs. This means the computer sends a ground (-) signal to turn a light on, while the positive (12V+) is supplied directly to the lighthead.
For many installers—whether at a professional upfitting garage or a volunteer firefighter installing a system in their personal vehicle—the is the most critical document in the installation process. Without it, you risk shorting circuits, blowing fuses, or failing to engage critical warning patterns when seconds count.