84mustangman

i have a 84 that i put a 93 5.0 in. everything works and the car runs great. i just have one issue. for some reason the first time you go to start the car in the morning, it won't get spark. you have to get out, and turn the motor over from the starter solenoid. after that, it will start everytime. i have the clutch safety wire on the wiring harness for the fuel injection and comp. wired into the pain in the *** to get to switch under the dash. i don't understand why it does this, but its kinda embarassing. any ideas?