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Old Oct 5, 2017 | 09:55 PM
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Default Help identifying under dash switch

Could anyone identify this switch?

68 convertible automatic.

It looks attached to the top of the accelerator bracket





My first thought was a tranny kick down switch, but see no mention of that in wiring diagram or AIM

Thank you!

Last edited by garyguinn; Oct 5, 2017 at 09:56 PM.
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Old Oct 5, 2017 | 10:20 PM
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I dont think my th350 had any electric kick down switches just the vacuum switch.

the purple and orange colors on wires are key to deciphering this. let me look at a wiring diagram.


isnt there a switch that stops the car from starting in gear???? this is ringing a bell
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Old Oct 5, 2017 | 10:25 PM
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I believe the 400 trans had that electric kickdown.
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Old Oct 5, 2017 | 10:30 PM
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Originally Posted by John 65
I believe the 400 trans had that electric kickdown.


i see the RPO-M40 has a automatic trans kickdown switch orange and tan wires
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Old Oct 5, 2017 | 10:33 PM
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Originally Posted by bobs77vet
i see the RPO-M40 has a automatic trans kickdown switch orange and tan wires
i see orange and purple in an AC relay also dark blue?
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Old Oct 5, 2017 | 10:36 PM
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
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[QUOTE=bobs77vet;1595709988]i see orange and purple in an AC relay also dark blue?[/QUOTE


i see a key warning buzzer.....orange and pink with a black stripe
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Old Oct 5, 2017 | 10:37 PM
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[QUOTE=bobs77vet;1595710001]
Originally Posted by bobs77vet
i see orange and purple in an AC relay also dark blue?[/QUOTE


i see a key warning buzzer.....orange and pink with a black stripe

is that a pink wire and if so does it have a black stripe? i think its the key warning buzzer

Last edited by bobs77vet; Oct 5, 2017 at 10:39 PM.
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Old Oct 6, 2017 | 07:02 AM
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Originally Posted by John 65
...I believe the 400 trans had that electric kickdown...
Yep.
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Old Oct 6, 2017 | 09:42 AM
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just pink....no black stripe...

and the orange.

I'll get a picture showing more of the "left" side
the dangling end of the pink wire is hanging down with the rest of
the console/center gauge cluster wiring..... I've identified all but
this and one brown 12/14 ga wire

fixing multiple Bubba's work....

Last edited by garyguinn; Oct 6, 2017 at 09:42 AM.
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Old Oct 6, 2017 | 09:49 AM
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Looks like the trans kick-down switch. Might have been grafted over to the '68 from a later model C3.

Last edited by 7T1vette; Oct 6, 2017 at 09:50 AM.
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Old Oct 6, 2017 | 12:38 PM
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Kick-down switch. It connects to the Tranny (out the firewall) and NSS (shifter assembly). The AIM does not do a good job showing the automatic assembly of this - of course my knowledge of this is with a 69' but it looks to be the same. My 2cts.

Last edited by nix1981; Oct 6, 2017 at 12:39 PM.
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Old Oct 6, 2017 | 03:35 PM
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Originally Posted by nix1981
Kick-down switch. It connects to the Tranny (out the firewall) and NSS (shifter assembly). The AIM does not do a good job showing the automatic assembly of this - of course my knowledge of this is with a 69' but it looks to be the same. My 2cts.
Yup, have it just like that on my 68 Pontiac too
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Old Oct 6, 2017 | 11:39 PM
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Thanks to all!!!!
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