Proa

The next wiring schematic is the 1957 Nash Ambassador wiring diagram. As you can see for yourself, this wiring diagram is very clear, every parts names are clear, also the connections are clear.

Check out the parts contained inside, they are including: instrument panel light switch, gas gauge tank unit, generator indicator, temperature gauge, instrument light, left direction indicator, gear selector light, hi beam indicator, flasher, circuit breaker, dome light & switch, backup light, etc.