86 chev pu TCC control

bought an 86 pu, 3 speed auto, and it has a tcc control, and the wires are NOT hooked up at all anywhere, so i would like to just use a toggle switch
to turn the solenoid on and off, my question is which wires do what, there are three wires, one must be the ground, 12 volt power and the third one i am not sure.
does anyone know here??
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.