i believe that the resistance of each of the wires and under coil connectors should not exceed 2k ohms. with suspect wire connected to a DVM, wiggle/ bend the wire, if the reading fluctuates and exceeds 2kohms, its probably a bad wire.

another thing you can try , is to move the wire . the 1&6 wire and the2&5 wires can be interchanged. if your missfire moves with the wire, you've found your problem .

good luck