1940 Plymouth Dash

[Jayden S]

Hello all, I have been wondering what this missing knob is supposed to be for my 1940 Plymouth Roadking. The far left is lights then choke but I have no idea what is supposed to be on the right of the key. 

[desoto1939]

where is you switch for the instrument panel speedometer lights?  On my 39 desoto the left knob is for the headlights then the next knob is for the panel lights then I have a knob for wipers because my car came with electric wipers. then throttle then the cigar lighter knob.

 

Rich Hartung

desoto1939@aol.com

 

 

[Jayden S]

Left is headlights, choke, unknown. Gauge cluster dimmer is under dash on a three way toggle.

[OUTFXD]

uuummmm its the power switch for the factory optional electric fuel pump? <jk>

[Bob Riding]

Mine is L-R  Headlights, Throttle, then Choke.

[dpollo]

Bob's dash is correct.   Someone has mixed up the positions of the control knobs

[Jayden S]

15 hours ago, Bob Riding said:

Mine is L-R  Headlights, Throttle, then Choke.

See that’s odd because where your heat controls are is where my Motorola is located. 

[Bob Riding]

You can see the knob layout in the b&w pic. The heat controls were an add-on that I installed, and were considered "available a a low extra cost", otherwise if your car came equipped with a heater, you adjusted the heat through louvers and knobs on the unit itself, which was usually suspended under the dash. 

[Booger]

dash throttle very cool. cruise control