You only say no spark so im assuming it turns and you have gas.
Have you checked the wire at the coil?
Have you checked the harness coming from the computer?
Have had problems there on two identical dodge trucks both v6 and v8. The wires even under the crappy tape and plastic tube were corroded completely through and through. Just from wiggling wires around on other side of vehicle it separated the bad section of wire. Although instead of tail lights I was putting a 6AL box.