Mark if you are reading the blinks correct the code would be 0650 l believe that code is for broken wire to check engine light from dash to ecm. does check engine come on when you turn key on to start truck. If so l would check wiring anyway from dash to ecm make sure the wires have good ohms from dash to computer.the light comes from Inigion through the bulb to ecm for ground. Make sure you have no short on the wires. Hope this helps