Blue is the cluster housing
Green is the cir board
White is the washers
On the back of the ammeter is a rectangular fiber insulator.
On the cluster housing there is a space for the posts to go through ( rectangular holes IIRC)
Then the cir board is attached to the back of the cluster housing
Then the washers
Then 2 nuts
Then the eyelet connectors, one from the alt, one from to the battery
Then 2 more nuts.
The " impregnated Washer" you refer to is just the washers that got stuck to the cir board coating after 55 years.
They should just pop off with a small screwdriver or a razor blade.
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Note the bright green is the copper traces, the dark green is the protective coating (sometimes it's blue)
There is NO copper traces under the coating where the ammeter goes through.
On the green cir board you can see the outline of where the washers sat at one time
On a side note.
DO NOT TIGHTEN THE NUTS EXCESSIVLY.
you can damage the gauges.
