What is the best way to clean up the oxidized portions of the printed circuit board(mine is from a 65 Dart) where bulbs, grounds, guage terminals, & harness attach?

Chemically?

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/

If it's not too bad you can use a pencil eraser.

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Joshua

There is no "white corrosion" just a darkened brown appearance from what I'd call as perfect "as new" brillant copper appearance.

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1965 Dart 110k, 225, Carter BBD Super Six, 2 1/4 single exh., sbp manual scarebird front disc, 7 1/4 rear 2.94 sure grip, 14 x 4.5 OEM wheels, 833 OD with hyd. throwout bearing, HEI, electric fan, ram air/heated air, Accusump. http://plymouthcarclub.com/

I second the pencil eraser. It's about the mildest abrasive attached to a stick you can get. I use them at work for relay and contactor contacts. Cleans up the tarnish, and doesn't remove any metal to speak of.

Roger

I have had good experience cleaning electrical component surfaces using DeoxIT; I got it at Radio Shack.