13 pin dedicated unit problem

**vininpreston** · 16th October 2020, 22:08

Hello to all,
Hope this is the right forum?
My outfit:- 2005 Vectra Design 1.9 cdti, 150bhp
The GM dedicated 13 pin towing module is only giving out a permanent +12v.
There should also be a ignition switched 12v+ , this would power the fridge in the caravan whilst towing.
But I only have the permanent 12v+
Do I need to get the ECU programmed to enable this ignition switched pin.?
Any help welcome.keep safe
Vin in Preston Lancs.

**kenp** · 17th October 2020, 08:00

Probaly the “ADD-on” loom is not fittet, or fuses, not fittet.

**vininpreston** · 17th October 2020, 19:03

Hello, Thanks for your imput.
Did not know you need a Add-on loom for a dedicated 13 pin plug. The fuse in REC is OK No 18 I think it was.
The permanent live is OK, feeds 12v through to caravan but nothing on pins 10 which is the ignition switched live.

**kenp** · 17th October 2020, 20:10

You Can make your own straghit from the rec.

but the correct one goes to the batteri at the front of the car.

i alså have 13 pin in my car, bus as i dont tow a caravan, i didnt wanted to fit the extra loom, or make it work out off the rec... (there is switched live there, and live, you can via a relay make your own...

**vininpreston** · 17th October 2020, 21:59

Thanks again, do not really want to splice into the REC.
Very strange when a GM dedicated 13 pin socket is fitted but the switched live is not active?