Cruise control servo experts: Are you out there?

[cruiser]

Hi Guys: Does anybody know how to test the electrics of a cruise control servo? I've attached a photo of my servo, which has three electrical contacts on it. The lower single contact has a blue wire attached to it and is ( I think) for the brake disconnect circuit. The dual upper connector somehow controls the on/off/resume/set features. I don't know if the servo is good, and would like to ensure that it's a good unit before I install it. Any ideas as how to do a full electrical check on it. Does anyone have the wiring diagrams from the cruise control system for a 1974 Charger or 1975 Valiant? Many thanks!

 

[69Bee]

Go here and download the Dodge 73 manual, should be the same for '74 too.

http://www.mymopar.com/index.php?pid=109

Refer to pages 8-84 to 8-91. This is the "Speed Control" section, and you will find the mechanical and electrical connections and test procedures.