Also, check the circuit breaker in the engine compartment. It's a small rectangular two post relay mounted just above the Master Cylinder or power booster on the firewall near the cowl tag. This is for the power top and power windows/seat etc... This is a $2 part that may go out from time to time...

I still have to fill my system and give it a try!
(one more thing on the ever growing list...)

Brett - 67 Drop Top 455!