Guys I've got a 330hp 454 mated to an alpha (gen 1) in a Baja. A shop wired in an HEI distributor because my thunderbolt module was blown, now I have no tackometer and no shift interrupt switch! Obviously frustrated with the shop, but nervous to have them do anymore. So I know Cash68 was working on a similar problem. Who know's what wires I'm looking for and where they need to go?

On the side of the cap, there are 4 wires, the 2 closest to the distributor go to the coil, tie the shift interrupt into these wires, not sure if yours grounds the - side or opens the + circuit. The tach wire, should be gray in your harness plugs in right on the side o the power wire to the dist. Should be labeled "TACH" on the coil cover