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1940 Overdrive Switch
#1
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Gar
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I am rewiring my Super 8 (1807) and notice that I have two pairs of wires going to my Econo-Drive. Two wires which are supposed to go to the overdrive indicator light(brown) and energize when the overdrive is active; and two which are supposed to go the lockout switch(black/red). I don't see the OD light socket anywhere on the dash and I do not find a switch that is near(or part of) my overdrive engagement cable.

Any assistance is appreciated.


Thanks,
Gar

Attach file:


pdf OD Wiring 1940.pdf Size: 46.67 KB; Hits: 56
pdf Econo OD 1940.pdf Size: 53.15 KB; Hits: 42

Posted on: 2021/9/29 20:29
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Re: 1940 Overdrive Switch
#2
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HH56
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Not sure if I am understanding your question exactly but if you have the wires for the light in the new loom but no socket connected it usually means the socket is not reproduced and you need to use your old one or else make something modern work. The OD indicator light socket is the same two wire electrically isolated from the body ground type used in most turn signal indicator lights but I don't know if one of those would fit in your car. I think I remember the 40 indicator light being part of another knob and switch nearer the top front of the dash so maybe the socket is still in that assy. Depending on the socket size some new springs, contact buttons, and fiber washers may be available from some of the wiring loom vendors. RI wiring is one who sells the individual pieces as well as the insulated light socket used for turn signals.

There are two 2 wire switches in the R9 OD circuit. One is the lockout switch under the dash. That switch is a small flat sided cylinder about 3/4" in diameter and an inch high with 2 screw terminals. It is positioned on top and at the end of the lockout knob bracket assembly. The kickdown switch is in the engine compartment low on the firewall on the accelerator linkage pivot bracket where the accelerator rod comes up from the pedal. Should be a rectangular box with two screw terminals on the side facing the front.

Posted on: 2021/9/29 21:00
Howard
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Re: 1940 Overdrive Switch
#3
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Gar
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Howard:

Thanks for the fast reply.

OK, so it seems that the lock-out switch was removed under the dash and was bypassed (not cool). Also looks like I need a lockout knob assembly.

I will have to add these to my list and start looking for more parts...

Posted on: 2021/9/29 21:18
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Re: 1940 Overdrive Switch
#4
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West Peterson
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I have a lock-out cable assembly with switch and knob in good condition. I can deliver to Hershey. $300

Posted on: 2021/9/30 7:21
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Re: 1940 Overdrive Switch
#5
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West Peterson
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Also, the light for overdrive on the dash is the same knob that is used for the dash light dimmer. On cars fitted with overdrive, the switch came with a light with a red cats-eye lens.

Posted on: 2021/9/30 13:03
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Re: 1940 Overdrive Switch
#6
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flackmaster
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and to clarify further, the rheostat for O/D equipped cars is different, with two more terminals...I have if you need this

Posted on: 2021/9/30 19:00
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Re: 1940 Overdrive Switch
#7
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Gar
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FlackMaster-- I sent you a PM

Posted on: 2021/10/8 12:28
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