Hi, I am new to powerstroke nation and I am having a serious problem I am hoping to get resolved. I recently did an e40d to a zf5 swap. I used the transmission and transmission wiring harness out of a 93 f-250 7.3 idi and I have a 1996 f-250 powerstroke. Everything is done and now it cranks but don't start. I have plugged in my clutch safety switch, I have jumped my neutral safety switch wires, pin 4 and pin 12 up under the brake master cylinder. Now when I turn my key forward my check engine light and my wait to start light blink. Also my idm relay clicks. I plugged my scanner into it and it has no codes. It will crank all day just not start. The e40d transmission harness had two plugins up under the brake master cylinder, the big square one and a small 2 wire round plugin and the zf5 harness only has the big square plugin, not the small 2 wire round plugin, does anybody know what that small round 2 wire plugin is for? Any help would be great!!! Thanks!! If you have anymore questions just ask.