Here's one method that will work. I have used it in several vehicles. You will need several relays. It depends on your vehicle as to how many but it's at least 2 and not more than 4. The relays are 12 volt relays. You can get them at an auto supply store or Radio Shack. One note on the relays... Do NOT get fog light relays. These have a metal case and the metal case is one of the relay connections. For the left side connect one side of the relay coil to the left turn signal and one side to the brake light. For the right side connect one side of the relay coil to the right turn signal and one side to the brake light. For the marker lights connect the coil of a relay to both sides of a marker light on the van. This step is only needed if you have low side (ground) switching or with some bulb monitoring circuits. For all relays connect one side of the relay contacts to a 12 volt source and the other side to the appropriate wire on the trailer harness. Some relays have a 'normally open' and 'normally closed' set of contacts. Use the normally open set. My above method is for using the vehicle to tow with. If you are towing the Golf that's a different wiring hook up. I'll whatch the board here to see if you need that info.
Check which wire does each light-- earth parking reverse fog indicator brake just splice into the feed cables in the left rear light
towbar maybe or be sure that your tail lights and brake lights are in good working order.
A complete towbar wiring diagram for your car is at the rear of the owners handbook that comes with the car from new it is in a blue folder and is usually kept in the glovebox.
To fix a problem with the rear lights for a Golf 5, you would first need to know what was causing the problem. You might need to replace the bulb or check the wiring for bare areas. The fuse could also be causing the issue.
open rear trunck lid. you will see fittings for the lights in rear light assembly. locate the fitting for the light that requires replacement. turn fitting counterclockwise and pull out. pull light bulb out of electrical socket.
if the switch lights up then check to see if the metal connectors and strips on the rear window are ok if they are then i would say the rear screen relay is broken.
I'm not sure about older models, but the current Golf offerings in the US, the Rabbit and GTI, and probably the A3 can't be ordered with rear fog lights, but they can be added as an aftermarket option. This requires replacing the headlight switch with a European model and running a wire which snaps into the existing wiring harness.
its only on European models, to make it work you need the euro switch and the appropriate wiring
If you purchase a direct fit tow bar, it should be self explanatory as the mounting brackets should line up with the frame/rear bumper supports. Unfortunatel y with a mk4, there is a large overhang on the rear bumper, and it isn't really well suited for a towbar, so there might not be many options our there.
The 2010 Volkswagen Golf has 52.8 in. of rear shoulder room.
The 2006 Volkswagen Golf has 52.4 in. of rear shoulder room.
The 2011 Volkswagen Golf has 35.5 in. of rear leg room.