386 Washer Pump NO POWER

last 6:172482
engine harness schematic: P94-6098
cab harness schematic: P92-8332-00000

i have continuity everywhere.
wipers work on every setting, just no washer pump.
i have checked: turn stalk to CECU, yellow wire on washer pump back to pin 46 on firewall connector, from D3 on firewalll connector to pin 46 on "J50", and also from D3 (opposite side connection) on firewall connector to chassis node "C".
im sure i left a few wires out. i have countless hours tracking down this issue to no prevail. very frustrated.

as i said, i have continuity everywhere seemingly. the only issue im having is figuring out which fuse "powers" the washer pump. in the cab there is a wiper system fuse (good), 2 diodes for wiper system, multiple relays. everything checks out. where the hell does the pump get power from????? i willl never understand why a 2 wire washer pump needs to go through 3 ecm's, multiple connectors, relays, etc. etc. etc. ridiculous.
PLEASE HELP

 

awesome. i just got back into the shop today, i will see what i can find from here. thank you

 

found the issue.. rubbed wires by driver front cab mount area. a group of 5 or so wires loomed together (all red) dont remember exactly what the tag on the loom said but they all went up into the PDC . fixed the wires (what a pain to get to) and the pump operates as should. thank you @pushbroom i can't tell you how big a relief it is to finally have that job done without just throwing a toggle switch in the dash