read above post, he is on it
Check the cap on the starter solenoid have two wires to either side of the main bat cable at the starter. see if they are loose and if possible check for a cracked cap on the starter solenoid.
One more thing that comes to mind, since you were moving the battery cables around while hooking up and or disconnecting the battery, look at the hot 10 guage wire coming off the POS. battery cable,,,,,You may find your culprit there.
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Remembermm all electrical devices are powered by magic and smoke,, if you let the smoke out, the magic does not work anymore
