Aux 6 (rear harness) no power

[Crashresq21]

2020 RAM 3500 CC SRW Limited 4X4 6.4

I installed a pair of KC Cyclone under truck lights two years ago via the rear power wires with the Upfitter package. Yesterday no bueno, stopped working.

Full battery of tests:
Clipped the wires, powered up, and checked with my tester. No go.

Checked the fuses......all good.

Bench tested the lights.....all good.

Swapped relays to see if it was a relay.....not the relay.

Can anyone add anything else to this mystery?

 

[H3LZSN1P3R]

Find the break in the system. Test the connector for AUX6 with the switch on see if there is power then work towards the rear of the truck if there is power is at the plug…

 

[Crashresq21]

Find the break in the system. Test the connector for AUX6 with the switch on see if there is power then work towards the rear of the truck if there is power is at the plug…

Thats the plan. Waiting for a chance to get her indoors and testing front to back. Im leaning on the interior firewall harness so far.