Originally Posted by jeffd0901
Just as a follow-up to this suggestion, I also "hardwired" my Bel RX-65 from the outlet in the passenger footwell. I actually modified the Bel's cig lighter plug-in adaptor and then ran the wiring around the footwell to the door seal, up the A-pillar, and underneath the headliner (see below for some pics).
I actually chose this solution so that I didn't have to "mod" any of the vehicle wiring (tap into wires, etc.). Works great and it was pretty easy.
Let me know if you have any questions!
Same detector and the same location FTW.
I used to get a new one every 2-3 years but the RX65 has been so good it's nearing 10 years with me.