4 Lo wiring need for 8.1 Vortec / nv4500 / np241 swap
 

Im finishing up the wiring to get my 1984 K30 up and running. 8.1 vortec backed by a nv4500 and a np241 transfer case. red/blue 411 computer. Original engine harness was trimmed and missing the stock 4wd 3 prong connector.

Is the 4lo signal needed on a manual trans setup?