Hi Akkording,

I think if I wanted to perform an experiment of "Temporary KDSS disengagement"; there aren't a lot of wires the in convenient locations e.g., in the dash...etc, I might install a 'single pole/double through' (spdt) relay on the GND wire (White w/Blk stripe "Stabilized ECU".

The reason for the SPDT relay, is because I don't know if the ecu normally operates when Energized or De-energized, so it can easily be switched around just by swapping one wire on the Normally Open, to the Normally closed terminals (or vice-versa)! I looked at a wiring diagram of that system but there are three ECU's that are networking together...

Main body ECU, Stabilizer ECU, and the Skid control ECU; which are using the four wheel speed sensors to control how KDSS is supposed to work! And like @Old Red has stated, you don't want the truck to start throwing DTCs in the CAN-bus system! The "Stabilizer ECU" has a Blk feed wire coming from the KDSS 10A fuse in the D/S fusebox!

This power source is HOT when in the on or start position. I might break the GND (Wh w/Blk stripe) wire, since our trucks utilize a Ground-side switch mode! And even then you may start throwing DTC's because the Stabilizer ECU has lost power; that's why I refered to this as an experiment! Hope this helps, 'Best to you'

rig