Has anyone experienced a battery drain even after disabling the radio (aftermarket)? My '91 has an issue with holding voltage. A new battery was installed this summer after some alt and bat testing. The alt tests good, but even the new bat won't hold voltage for more than two days. Am I looking at a crack in the insulation of my positive bat cable? That has bitten me on another vehicle in the past!
The grounds have been checked and cleaned per miata.net posts. All accessories with the exception of the ECU have been disabled. No lights are left on, etc. Ideas, inspiration>
Thanks