1991 bonneville dash eclectrical problems

kes61kes61 Member Posts: 1
1991 Pontiac Bonneville: Dash electrical problems
I When ignition key is OFF, headlights and headlight indicator work fine

II When key is on and headlights are on: a) Hi-Lo indicator works in reverse b)turn signal indicators both stay on bright, but flash correctly c)RPM gauge, volt gauge,, speedometer all wiggle when running dash light brightness wheel is moved e) volt gauge does not work f) parking brake stays on

III When key is on/headlights off: a) volt gauge does not work b)parking brake stays on c)turn signal indicators both stay on but are dim, both blink together and along with hi/lo indicator when flash d) rpm, volt, oil pressure jump with turn signal flash

Help! Thanks
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