I have an old Ford Tractor that is 6 volt. The battery needed replacing recently, and having heard about 8 volt batteries, I bought one. I thought that it was a simple drop-in replacement. Only after the purchase did I find that to make the 8 volt work, I'd need to readjust the voltage regulator to make 8 volts, or the system wouldn't function properly. At one point, my regulator was buzzing like a doorbell from the uneven voltage. Voltmeters and other equipment are needed to reset the points. I decided that it just wasn't worth the trouble, and went back to 6 volts. Happily, the dealer exchanged batteries for me, no cost. When the 6 volt system fails next time, I'll convert to a 12 volt conversion, using a single wire alternator from GM. Those conversion kits (For a tractor) cost around $150 or so. Of course, I'll still have to convert the lighting, and that is lots harder on a car. Joe Savard Lake Orion, Michigan In a message dated 12/20/2011 4:53:01 P.M. Eastern Standard Time, LabLoverDC@xxxxxxx writes: I've never tried this, but if you don't want to go with dual batteries but need a little more juice, I have been told another improvement over the 6-volt system is to use an 8-volt battery. Again, I'm just repeating what I've been told, but apparently that is not enough to blow bulbs or hurt anything, but it offers a little more power. [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/