73 Dodge Dart Sport Fuel Gauge Wiring

Nope the voltage limiter supplys power to the gauges and either works or it dont.
The headlight switch knob wasn't supposed to pull right off the stem. There is a release button on that switch to remove the stem and knob as one.
The wiper switch knob should have a set screw in it. Some have a steel keeper that bites the stem. It is released with a 90 degree pick inserted from behind the knob , or is that a Ford thing ? Hope this helps