This circuit is often controlled by RAP (Retained Accessory Power), meaning it stays on for 10 minutes or until you open the door after turning off the key. 2. Under-Dash Relay Panel (Above Brake Pedal)
Use an "Add-a-Circuit" (fuse tap) for a clean install. Note that this is often a 3-pin fuse slot, so you may need a specialized mini add-a-fuse. 2004-silverado-switched-power-source
Don't just plug into any empty slot. Many fuses in the driver’s side box are hot at all times. Always test the fuse with the ignition off before finalizing your connection to prevent battery drain. To help make this guide better, let me know: This circuit is often controlled by RAP (Retained
Installing a new dashcam, radar detector, or aftermarket accessory in your 2004 Chevy Silverado? You’re likely looking for a —a 12V supply that turns on only when your key is in the ignition and off when you take it out. Note that this is often a 3-pin fuse
Absolute necessity to verify your switched source. ⚠️ Pro-Tip: Avoid Constant Power Fuses
Unlike older trucks, the 2003-2006 Silverado/Sierra trucks (GMT800 platform) are heavily controlled by the CAN-bus system, meaning many fuses in the dashboard remain live (constant power) even after you turn off the truck. This can lead to parasitic battery drain and a dead battery!