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Posted by Chriscase [67.121.211.232] on Sunday, December 12, 2010 at 18:02:03 :
In Reply to: Corrosion inside battery cables posted by Paul Cook in Kempner, TX [71.53.89.64] on Sunday, December 12, 2010 at 16:21:39 :
In this case, hook a voltmeter lead to each end of the cable, in the truck. Should read zero volts. Now put the load on, try starting. It should read maybe 1/2v. This means the voltage is dropping by 1/2v over the length of the cable. Paul's bad cable would have read oh... 11 volts.
Works good to find bad switches and other stuff too. Like poor connections. It's a tool I often forget is in my box.