HDJ79R Tail harness wiring pinout

[thermionix]

Hello,
I own a 02' AUS HDJ79R and recently came into possession of a new tail harness PN# 82162-60M82, I believe to suit a VDJ79 with a tub.

I'm putting on a new tray at the moment and thought I'd replace my harness as the old one has been destroyed by previous owners.

The subtank gauge isn't working with the new loom.

The left most pin on the new harness for the gauge plug is a brown wire

The plug going into the rear of the cab is a 11 pin waterproof connector 90980–11239

The brown wire goes to pin 7, which on the old harness is a red wire with black stripe

On the original harness, the left most connector of the fuel gauge goes to earth - I'll have to modify the new harness to move this to an earth.

I'm curious as to what the original pin 7 (red/black wire) is for?

I've been unable to find a pinout for the connector on the rear of the cab.

 

[FJ73Texas]

The EWD for your truck will be your best friend.

I recently went through this on my own truck (identifying pin by location and wire color) and the EWD is a big help to confirm everything. It will tell you what the red-black wire is for.