Quote:
Originally Posted by OhioYJ
Yeah its one of those things we all used to do, but on modern cars with all the electronics its a really bad habit. It sends spikes through the electrical system. I know Chrysler / Jeep systems are bad examples of this, many of these will go to 20 plus volts, some just sit there at this voltage with bad batteries (or missing batteries).
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Have an '08 Power Wagon. I know when the battery starts going bad. Even tho it's showing about 10.5 volts. The dash lights will go crazy at times and the stereo acts up. With the 3G Rams. This is common.