If you need a "hard" switch that cuts power instantly when the key turns, check under the dash.
Here are the best, verified locations to find ignition-switched power on your '04 Silverado. 1. The Best Spot: Passenger Side Fuse Panel (F26) 2004-silverado-switched-power-source
Finding Switched Power in a 2004 Chevy Silverado (Easy & Safe Methods) If you need a "hard" switch that cuts
Use a multimeter or test light to confirm it is hot only when the key is on. Essential Tools for the Job The Best Spot: Passenger Side Fuse Panel (F26)
If you are comfortable splicing, you can find ignition power directly at the steering column.
Absolute necessity to verify your switched source. ⚠️ Pro-Tip: Avoid Constant Power Fuses
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: