Permanent live on 7 pin tow socket?

CaptLimey · 03-11-2010, 19:17

Hi all.

Having just plugged the trailer into the 7 pin tow socket of the new (to me) '03 3ltr T2, I found that the trailer's rear high intensity fog light was on permanently.

Traced it back to the tow socket having a permanent 12v live terminal feeding the fog light cable on the trailer circuit. It seems that the car is wired to supply a caravan with 12v permanently, when connected, but does not appear to have a separate supply for the trailer's high intensity rear fog light.

I've managed a temporary work-around to overcome this but is this a normal wiring system?

Regards CL

03-11-2010, 19:17	#1
CaptLimey Senior Member Join Date: Nov 2007 Location: South of France Vehicle: '03 LWB MK.4 3Ltr T2 Posts: 421	Permanent live on 7 pin tow socket? Hi all. Having just plugged the trailer into the 7 pin tow socket of the new (to me) '03 3ltr T2, I found that the trailer's rear high intensity fog light was on permanently. Traced it back to the tow socket having a permanent 12v live terminal feeding the fog light cable on the trailer circuit. It seems that the car is wired to supply a caravan with 12v permanently, when connected, but does not appear to have a separate supply for the trailer's high intensity rear fog light. I've managed a temporary work-around to overcome this but is this a normal wiring system? Regards CL Last edited by CaptLimey; 03-11-2010 at 19:19. Reason: Additional information