55 Roadmaster Ammeter looks great, however…..

[Paul Falabella]

Took the gauges out, cleaned them up, reinstalled. Ammeter works until high charge or discharge then needle parks itself at stop + or -. Will also do this rounding a corner! Will free up with a sharp rap of the knuckle,but goes right back. Works fine on straightaways.

Ever heard of this one?

Always sumpin'.

[TexasJohn55]

Nope, consult wiring diagram.

[JohnD1956]

Not sure I understand the problem. Can you post a picture of the guage with some references to where you note the needle in your first post?

[Paul Falabella]

The needle will swing all the way left or right and stick. But will free up with a rap on the glass, function properly for a while and then swing right or left and stick again. This swing is sometimes prompted by a right or left turn. Like a turn and bank indicator on an airplane except it doesn't center itself after the turn is complete. Weird, I found an NOS unit on the big auction site just in case.

[Guest NikeAjax]

So, if you turn right it goes to +, and left, to -... Sorry, I couldn't resist that one! Is the shielding still there: there should be a folded-piece of gasket material between the terminals. Check your connections between the ends, also, make sure your wire's insulation isn't worn away and shorting out onto something. The wires themselves could be bad too--oxidized inside! Is there something inside the gauge itself moving around...

Just a few considerations,

Jaybird

[TexasJohn55]

Or a broken hairspring internally for the needle return.?

[Paul Falabella]

Return spring would make sense. I must have done something when I disassembled for cleaning. Did not realize this unit was fragile.