western star jakes

This didn’t help ? Seems like it pretty well covers wire colors and concept of closing the loop

 

I'm away from the truck for a few hours, but I've got the exact same chassis/cab. I'll take a pic of the dash and what tag numbers go to what switches for the jakes.

Does the harness have the clutch switch and ecm/fuel switch pickups already installed? There should also be an override for the cruise control.

As far as actual Jake control there's only 4 different circuits to complete. Power to the Jake, then heads 1-3 control. Anything else behind those switches is either power to the switch for lighting or power supply to the actual switch circuit.

 

Ok here you go. I do a fair amount of electrical and tbh the circuit labels seem like they're one offs, but I hope it helps you out. The Jake on/off switch is to the left in each pic.

Pinouts are:
Jake on/off
1 - empty
2 - C260
3 - empty
4- empty
5 - B10M
6 - HB14A
7 - G026
8 - GL1F / GL1E (2 wires)

Jake 1/3:
1 - empty
2 - E804A or EB04A (hard to read)
3 - B288
4 - B058 / B05C (2 wires)
5 - empty
6 - B05C (bridged to pin 4)
7 - G02C
8 - GL1D /GL1E (2 wires)

Should mention this is with a n14 460. I don't think it would change with your Detroit, the Jakes are just 2 wire coils.

20181230_131151 by PTSCummins posted Dec 30, 2018 at 1:17 PM

20181230_131502 by PTSCummins posted Dec 30, 2018 at 1:17 PM