Just thought I would let you know that I have resolved my problem. After going through every connection and testing everything, I determined that I had two bad, used TCI units. I bought a new one from http://www.cheapcyclepartsonline.com/ (at an excellent price I might add), plugged it in and my '84 Venture is running beautifully. Another good thing about this problem is the other minor problems I discovered and repaired, thanks to the posts I found on VentureRider.com. Thanks to all. This is a great group!
Riding again,
Scott