I am trying to install an audiovox aftermarket cruise control in my 1975 F-350. The factory cruise control had a cracked body and I could not find a replacement. The VSS is in line with the speedometer cable but I do not know which is the signal wire. I can use trial and error but would rather simply have an answer.

Can anyone help? (Audiovox data does not include anything that looks like what I am looking at...)

Mike[8D]