by thrashingcows » Sun Dec 13, 2015 9:53 pm
From my understanding the early 89-90 and early 91 did not have a tach available? 91.5's used a separate harness and supplied CPS to work with the Tach. The 92-93 had the tach harness incorporated into the factory wiring, and as Val mentioned only required a simple plug in to harness to work.
1984/93 Dodge Crewcab, W350, 1 Ton SRW, long box, 330K Km's, M&H spacer, 366 spring, fuel pin to deep side, 14cm housing, Piston LP, PS IC, Isspro Boost, Pyro and tach, NV4500, 29 spline NP205, 3.54's.
Check out the build....
http://www.dieseltruckresource.com/dev/ ... 05923.html