[VetteVet]

Originally Posted by 67sss

changed out module with no luck.
Rule #1- start from the beginning, and come to find out that my unfused power supply the dizzy had/has a bad connection.It'll have power till the engine vibrates and loosens the connection. Now I'll have to find a new power source or replace the complete inside fuse panel with a extra one I have. Oh the joys of working on "old" trucks.

Where is another good keyed power source for the dizzy?

If you can find this cloth covered wire on the firewall block you can replace it with the HEI wire to the BAT terminal. It is the stock resistor wire to the factory ignition coil.



here is a step by step of how to do it.

http://67-72chevytrucks.com/vboard/s...d.php?t=148346

Start at post 12.