I would appreciate any input on this. I have an SLK32, but everything should be identical on our cars.

About six months back I installed a Braille battery with no issues. Not long after that I installed some gauges (the JR Industries refaced variety, AFR narrow band and boost) and began having battery drain issues immediately. The Braille doesn't have a lot of back up capacity, so the battery would drop below 12V in less than 2 weeks. At first I thought the Braille was bad, but I didn't have time to deal with warrantying it so I bought a standard battery from AutoZone until I could get around to shipping it back to Braille. Problem seemed solved for while. I have since gone through a couple of times when I didn't drive my car for over two weeks, and the battery goes dead again -- it takes longer, but same thing. I know this battery is fine.

The gauges are tapped into the fuse box at the e-call fuse (no. 18) and the exterior mirror adjust fuse (6). The AFR gauge is tapped into the grey O2 sensor wire at the ECM. Are any of these connections problematic?

Thanks-- /C