first off i have a 90 yj with the 4.2, the starter had been acting up for a week or so. once in awhile it would not start so id get out and jump it across the solinoid, so then one day would not work, so i tapped on the starter and that made it go. so problem solved id go get a new starter. i get the starter put it in and go to start it nothing. im 100 percent sure its wired right hard to get wrong. so we started to trace through the wiring couldnt find anything so i put the relay on the fire wall in it still nothing. im fairly sure the igntion switch is good, and the batterys new. any ideas?