The power wires are connected directly to the battery. My issue is with the wire that tells the module to turn on, supposed to be connected to 12V ignition on source.
About 4 years, it's a Duracell from Batteries Plus so I'd be surprised if it's already going bad but the truck has always been parked outside and until last Spring sat through multiple Colorado winters and summers. I'll check the voltage after it's been sitting a few days.