Towbar wiring for forester

[lennai]

Hey all. I’m struggling with wiring up a 7 pin towbar connector on my forester and need some help. The plug in back of car has 9 wires (into a 10 pin plug) and I’m unsure what some of the car-side wires are for. Checking with my mulitmeter I have,

pin positions:
1 2 3 4 5
6 7 8 9 10

Pin 1 – Red wire/yellow stripe –rear lights
Pin 2 – Purple wire – rear lights
Pin 3 – White wire/black stripe – brake lights
Pin 4 – Black wire/green stripe – left indicator
Pin 5 – Green wire/white stripe – right indicator
Pin 6 – Green wire/black stripe
Pin 7 - Black wire
Pin 8 – Black wire
Pin 9 – Vacant
Pin 10 - Blue wire/red stripe – always live at 12V

Some of the connections seem obvious (hopefully) ie. indicators and brake lights. Questions are:
Assuming (?) black is earth, why are there 2?
What is pin 10? (Auxillary?)
What is pin 6?
Why are there 2 wires for lights?

Thanks

Len

 

[troyXT]

Len,

I just checked mine out.

The colours all match up to yours on the subaru side.

The pins that they connect to are in my case for the standard subaru 7 pin connector are :

Pin 1 - Brown
Pin 2 - Brown
Pin 3 - Red - Brake
Pin 4 - Yellow - L Turn
Pin 5 - Green - R Turn
Pin 6 -
Pin 7 - White
Pin 8 - White
Pin 9 -
Pin 10 -

One of the whites is earth, I think one is reverse or auxiliary.
The Brown There is one for electric brakes and one for tail and rego lights.


There was a blue and black wire in the wire ribbon that they didn't use which, would have been good so it matched diagrams like this.

https://www.noboundaries.com.au/Hints and tips.htm

Not exactly sure of the pins but it gives you an idea on which ones are used.

Hope this helps.

Troy.