| Pin | Wire Color | Function | Technical Note | | :--- | :--- | :--- | :--- | | 1 | Red (10 AWG) | | Connect directly to the positive terminal of the vehicle battery with a 40A fuse within 6 inches of the battery. | | 2 | Black (10 AWG) | Chassis Ground | Connect to the vehicle chassis. Do not daisy-chain with other grounds. | | 3 | White or Yellow | Ignition Sense (Switched) | Connects to a fuse that is only live when the key is in "Run" or "Accessory" to automatically shut down the system. | | 4 | Orange | PA (Public Address) Speaker + | Positive lead to the 100W Whelen speaker under the hood. | | 5 | Brown | PA Speaker - | Negative lead to the speaker. | | 6 | N/A | (Reserved) | Usually for diagnostic programming. |
The is a legacy, heavy-duty emergency vehicle siren and light control system designed to centralize the power distribution and switching of emergency equipment . Because Whelen has transitioned its digital documentation to newer architectures like the Sapphire, Carbide, and Core systems, finding an official CenCom Gold wiring diagram PDF online can be incredibly difficult due to broken links and 404 errors.
as its central hub, connecting to the control head and vehicle components through several specialized ports. System Connectivity Overview cencom gold wiring diagram
The siren functionality is handled through a specific 4-pin or 2-pin connector depending on your specific hardware revision. Typically a pair of brown wires. Speaker 2: Usually brown with a white stripe.
This plug handles inputs from the vehicle and low-current audio outputs. It is critical for integrating the system with the vehicle's factory controls. Pin Number Wire Color Function / Description Radio Rebroadcast Input (Connects to two-way radio speaker) Pin 2 Blue/White Radio Rebroadcast Input (Connects to two-way radio speaker) Pin 3 | Pin | Wire Color | Function |
The CenCom Gold is programmed using a Windows‑based software application (included with the system). The software provides a “drag and drop” interface that allows you to assign any control head button, slide switch position, or input trigger to any of the system's outputs and siren functions. You can set a button to be momentary or latching, or even configure an eight‑second timer or a “security double‑tap” option.
Features 6 high-current outputs (totaling 60 Amps), 16 low-current outputs, and a 10-amp dry contact relay. | | 3 | White or Yellow |
Wire each lighthead positive lead to the corresponding output pin on the 12-pin connectors.
The unit also provides additional outputs for smaller loads, often managed through the AMP connectors. Speaker Output (Siren) The CenCom Gold handles one or two 100-watt siren speakers.
Disclaimer: This guide is for informational purposes. Installation should be performed by a certified emergency vehicle technician. Always follow local laws regarding emergency lighting colors and flash patterns.
The brain of the system containing programmable solid-state relays.