2004 2500 Truck won't start after FCM swap

Asked by Nov 26, 2016 at 01:22 PM about the 2004 Dodge Ram 2500

Question type: Maintenance & Repair

My right low beam headlight on my 2004 2500 pickup wasn't working. I went to a junk yard and got another FCM and installed it this morning and the lights work! Yea! Unfortunately, the truck now doesn't start. It doesn't turn over at all. I turn teh key and all gousges and lights on the dahs work. When I shut the ignition off there is a weak buzzing sound and a small circular red light on the dash. I wnet ahead and re-nstalled the old FCM, but still no luck. I checked the obvious fuses and relasy in the IPM. IS there a fusible link that I might have blown? Any thoughts out there?

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