68 a-body left indicator pulses

What is the charge gauge doing when this happens? Also try disconnecting the voltage regulator and see if it stops.
Here are 2 links to your wiring schematics that may help with troubleshooting.
http://www.mymopar.com/downloads/1968/68DartA.jpg

http://www.mymopar.com/downloads/1968/68DartB.jpg
Thanks for the schematics,I disconnected the flasher,, no change,disconnected Voltage regulater no change,, the amp gauge does not move at all when the indicator pulses,I havn't checked the voltage limiter yet, if I disconnect the plug for the front lights(left block under hood) problem goes away I checked all grounds at the light fixtures in front with an ohms meter all is good