It's not available from what I understand.
Maybe an electronic guru could figure this one out and find something that would work.
The wire to the tach passes thru that gizmo and it has a resistor in it for "exess charge" to induct over to ground.
My wires cracked off both those gizmos that I think only are needed for radio noise. I can't here my radio while driveing,,,so I eliminated both of them years and years and many miles ago. Your truck will run fine without them.
You just need a soldering gun.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.