Hardwire my radar detector - need help
- tap off the switched radio hot and ground
- tap off a switched accessory slot on the fusebox and ground to the column support frame.
All my f-bods have had the detector hardwired sitting in the very left corner of the dash, so the fusebox approach is easier.
If you run the power wire down the left A pillar then you can get ignition switched power at a terminal designed for that purpose in the fuse box. It's a single blade terminal labeled IGN. This will turn the detector on and off with the ignition rather than leaving it on during the RAP (retained accessory power) cycle like the radio. Just be sure to add an inline fuse wherever you connect to.
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been a few months since i fooled with the headunit anyone got a color chart
And coming from the fuse box it would be spade terminal, inline fuse, then hot wire running to switch right? And what amp should I use. 20amp?
Thanks. And sorry...don't know much of anything about electrical systems.
And coming from the fuse box it would be spade terminal, inline fuse, then hot wire running to switch right? And what amp should I use. 20amp?
Thanks. And sorry...don't know much of anything about electrical systems.

And sorry....kinda hijacked this thread.
Why run a wire all the way from the A pillar to the radio when the fuse panel is right there? (we're talking about a radar detector near the mirror) Besides, whenever possible, it's better to use a circuit that is designed for accessory installation rather than tap into a circuit already in use. In this case, the yellow wire at the radio provides power not only when the ignition is on but also during RAP operation - so it's not really what you want for a radar detector.
Thanks for the write up. Everything worked great.
Ive had several people hook up xm units like that which are 6volt inputs and fry their units.








