I've just put an engine in a SC that I bought not running. I just fired the engine up and was checking everything out and discovered the brake pedal is hard. I checked vacuum to the booster and the check valve. All checked out fine. Normally I would go ahead and replace booster but this one has an electrical connection on the booster near the master cylinder that I'm unable to find in my electrical drawings. Before I start to pull the booster, is there anything else I need to check. Any help is appreciated
Mark
Mark