Splice the Electric Blasting Cap to the Firing Wire. Splice the blasting cap to the firing
wire using the steps that follow.
Strip 3 inches of insulating material from the blasting cap lead wires and the firing wire leads
using the M2 crimpers.
Two wires may be spliced as shown in Figure 22. This procedure is called the Western
Union pigtail splice. The Western Union pigtail is the Army's standard field wire splice.
Figure 22. Splicing the electric blasting cap to the firing wire using the Western Union pigtail splice.
Connect Series Circuit. Connect the series circuit using the steps that follow.
Connect the blasting cap lead wires into the common series circuit or the leapfrog series
circuit if two or more blasting caps are used. See Figure 23.
Splice the blasting cap lead wires to the firing wire.
Prime the Charge. Prime a demolition charge using a blasting cap with a priming adapter
(Figure 24) and the steps that follow.
Untwist the free ends of the lead wires and fasten them to the firing wire.
Pass the lead wires through the slot in the adapter.
Pull the cap into place in the adapter.
Insert the cap into the cap well of the demolition block and screw the adapter in place.
Prime a charge using a blasting cap without a priming adapter (Figure 25, Page 20) and the steps
that follow.
Untwist the free ends of the lead wires and fasten them to the firing wire.
Insert the electric cap into the cap well.
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