Internet mechanics help

[ARCTICFRONTIER]

Question for you guys: in the pictures attached is a piece on the throttle linkage on my truck. One green wire is attached to the blade connector. There's a second green wire sitting up along the firewall. The wire that is hooked up has 12 volts with the ignition on. The wire that is not connected has no voltage at all.

What the heck is this for? And should I hook up the other wire?

Thoughts?

[geezer#99]

Someone's idea of a high idle.
The second green wire likely goes to a ground switch.
Hook it to a ground and see what it does!

[Jrainman]

the wire on the linkage side looks like it may be a aftermarket TH 400 trans kickdown switch , and could be the other wire is for a electric choke, the choke would be on the other side of the carb, maybe someone has either changed the carb over to manual choke or put a manual choke carb on

[Leonard60]

Is there a vacuum line going into that switch if so it wouldn't by chance be a shut off for something if you lose vacuum. Ie: lpg trucks had them to shut the fuel solinoide off when the truck wasn't running.

[ARCTICFRONTIER]

Originally Posted by Leonard60

Is there a vacuum line going into that switch if so it wouldn't by chance be a shut off for something if you lose vacuum. Ie: lpg trucks had them to shut the fuel solinoide off when the truck wasn't running.

I don't think it has a vac line to it. I'd have to double check.

[ARCTICFRONTIER]

Originally Posted by Jrainman

the wire on the linkage side looks like it may be a aftermarket TH 400 trans kickdown switch , and could be the other wire is for a electric choke, the choke would be on the other side of the carb, maybe someone has either changed the carb over to manual choke or put a manual choke carb on

Thanks for the reply. It has an edlebrock carb with an electric choke but the electric choke is on the other side and looks to be wired correctly. Could be kick down switch. That would make sense on the linkage side!

[ARCTICFRONTIER]

Originally Posted by geezer#99

Someone's idea of a high idle.
The second green wire likely goes to a ground switch.
Hook it to a ground and see what it does!

That was one of my thoughts. High idle switch!