Hello again,
Just for GP, it seems that the problem was the heavy duty flasher unit. I cleaned the terminals to the battery, got new parking light bulbs and connected it back up and the radio, dash lights, headlights and running lights all worked. Yay!, cross my fingers..............., glad it wasn't the hazard light. Now onto the suspension.....
Thanks for all the help and pointing me in the right direction.......hope this can help someone else.