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Old 01-19-2010, 12:13 AM   #1352 (permalink)
MPaulHolmes
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Join Date: Feb 2008
Location: Seattle, WA
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Michael's Electric Beetle - '71 Superbeetle 500000
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Ben, it might be a grounding problem. Has Adam talked to you about it yet? The RS232 is basically the 12v ground. The DC-DC was off of the battery pack. So, if it wasn't isolated, the 12v ground was shared with the ground of one of the batteries in the pack. I think you need an isolated DC-DC.

-Paul
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