working on a 2000 f650 with a cat engine. recently replaced the GEM due to being fried due to water leaking around the windshield. truck started fine and worked fine for about 2 weeks and yesterday i went to start it and i got nothing. it won't crank when the key is turned. all the fuses and relays are good as far as i can determine. battery voltage is 12.2 i did notice the wait to start light only comes on for about 2 to 3 seconds now whereas it was much longer before. not sure what i'm overlooking or missing any help is greatly appreciated. thanks in advance.