Joined: Mar 02, 2014 Posts: 14 Location: Paradise, CA
Posted: Tue Apr 08, 2014 5:12 pm Post subject: Battery on neg put out spark
Got everything hooked up, wen t to connect the batteries and the neg side sparked and scared the heck out of me. what could have made it spark like that? is something wrong with starter or something
Joined: Feb 16, 2007 Posts: 206 Location: Gold Coast Australia
Posted: Tue Apr 08, 2014 6:00 pm Post subject:
Depends on the intensity if the spark....you may have a short somewhere or you may just have the lights, ignition or something else turned on.
First thing to do is make sure everything is turned off. _________________ John GIBBINS
ASE Master Medium/Heavy Truck & Auto Technician 2002 USA
Licensed Motor Mechanic NSW # MVIC 49593 Current
YOU CAN'T TROUBLESHOOT WHAT YOU DON'T UNDERSTAND
Joined: May 14, 2009 Posts: 973 Location: South Dakota
Posted: Tue Apr 08, 2014 6:02 pm Post subject:
Had the same issue. Put a test light in the circuit with the cable and post disconnected. If it lights up , you have a draw or short. If it doesn't, there is a capacitor inside the 24 volt voltage regulator that discharges and causes the initial spark. That small spark is normal. John
Oil leaker hit the nail on the head. A momentary spark when connecting the ground is usually the capacitor in the regulator discharging. If after the short spark you connect a light between the disconnected ground wire and the neg terminal on the battery and it glows then you have an active current draw. If all switches are off then the most usual cause is the shorted contacts in the manual starter switch. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
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