ill take a good look at all the solder points on the board with a magnify glass.so your saying strip the coating right off the bottom of the board?is there any one particular area that could be involved?id love to get hold of schematics and associated theory of operation.give me a car i can tinker with and im happy.

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michael cole 1980 300SD gone now but not forgotten,87tdt,90 300te 4matic 95 e320 wagon