I'm thinking about putting some ring terminals on a 6-8ft length of 8AWG copper wire and running from the alternator directly to the X12/3 terminal and see how that works. I cannot seem to find where the splice/connection between the lead to the starter and the alternator so I think this might be the a good test. I'm not sure of the wire gauge from X4/31 to X12/3 so this will only be temporary for debugging purposes. I'll post my results...

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Scott C.

2006 E320 CDI (120k miles)
FOR SALE: 1998 E300 Turbo Diesel - Black w/Tan Leather - Euro delivery (236k miles)