URGENT HELP NEEDED!! Starting problem

Urgent help needed! I have a 74 swinger with a 727 and a 318. I've been having problems starting the car. When I turn the key the starter makes a clicking noise instead of turning the engine over. But when I jump the two terminals on the starter relay it turns over perfectly. I did put a new mini starter, starter relay and neutral safety switch in but it still has this problem. This didn't start happening till I put in the new mini starter. I really need my ride running today so that I can get it to a show tonight. Any advice is greatly appreciated. :banghead: