Repurposing unused M1078A1 electrical circuits

[hike]

Looking through the schematics (20040129 version) at what each CB is connected to has me rethinking some things for new dash power: door locks, power windows, power mirrors, dash camera, and back up and side cameras.

It appears in our M1078A1 we have a number of totally unused circuits in both 24v and 12v flavors:

24v Battery
CB 20 – Radio
CB 30 – Chemical Detect
CB 45 – Arctic Kit
CB 86 – not found in schematics (not listed in Equipment List Ref, though on our PDP)

24v Ignition
CB 35 – not used
CB 50 – Swing Fire/Dump

12v Battery
CB 38 – Rotating Light (Wrecker)
CB 53 – Wrecker/Crane
CB 72 – Portable Work Light R/L
CB 84 – not found in schematics (not listed in Equipment List Ref, though on our PDP)

12v Ignition
CB 88 – Aux Power Tractor Only Rear Lights (not listed in Equipment List Ref, though on our PDP and found at 8/193)
CB 89 – not found in schematics (not listed in Equipment List Ref, though on our PDP)

Why not use or repurpose these existing circuits? CB 38 is switched at the dash already and could be repurposed for off road lighting. CB 53 could run power to the doors for locks, windows, and mirrors and Blue Fire glass dash sender. CB 30 and CB 45 could run a roof top AC unit.

 

[hike]

We found the J62 plug (schematic 9/232) at the cab's back wall does have power when the rotating (CB 38, K13) light is switched on. So, at least that circuit could become an aux lighting circuit very easily—

 

[hike]

Of course, our PDP lid labeling, the PDP, and schematic don't all match—





According to the lid label: 24v Ignition CB 81 may also be a spare—