Question about 2001 BMW 5 Series

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Tow bar wiring

How to wire a tow bar plug when car has bulb detection system

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You need a Trailer Light Power Module - Uhaul, or anywhere that sells hitches and accessories. The module will power the lights directly from the battery - it still hooks into your car's lighting system, but only for sensing purposes, it doesn't put an extra load on the lighting system.

Here's an example from Uhaul:

http://store.uhaul.com/Wiring__lights/Moving/Trailer_Light_Power_Module

Hope this helps :)

Posted on Mar 08, 2009

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Posted on Jan 02, 2017

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Good morning , on the dash , the warning lights are coming on , saying lh indicator faulty , rh brake light faulty lh sidelamp faulty , but we have checked all the bulbs and they are all fine ...any i


Do you have a tow bar fitted? Sounds like a wiring problem earth short usually a badly wired in tow bar can cause it as they wire them into the light cluster using scotch locks they need soldering properly. Failing that or no tow bar fitted have you got water ingress in the lights Definately sounds like the rears

Nov 25, 2014 | Cars & Trucks

1 Answer

Wiring diagram for a toe bar


that will take some major rewiring, no?

front toebar. wiring. to tower hitch.

first off we dont know what is towing car, nor its hitch wiring

but in most cases, you may need and adaptor, to convert simple

USA wiring to Euro type wiring.

there are 2 systems. that cant just be wired in willy nilly.

is this permanent? one tow , only

or for ever. we cant guess that.

if 1 tow ,why not use clamp on aux light bar and get it done

rent them at u-haul?

if perm, is need , get a pro shop to do this.

how to do this and not damage the cars , electronics that controls

lights can be very tricky.

the safest way is to have new connector installed to rear lights.

to the main harness, then you unplug the cars harness side

and then connect the tow bar new custom harness connector to the rear.

none of this is easy or simple.

tell more get more.

Sep 12, 2014 | Suzuki SX4 Cars & Trucks

1 Answer

Connecting a towbar


The first thing to do is not to guess at what wires do what. Go to the hardware store and pick up a tester that has only one test prong. They usually have a battery in them. put the tester in the connector terminals and test one at a time. These little tester require you to be somewhat grounded like leaning your arm against some metal on the car. if you can't find somewhere to ground your self, then run a small wire from the negative battery post/wire and wrap the bare wire around your finger. Turn on which ever item you want to test first. When you find the wire that is hot9lights up the tester) then plug in to one of the tow bar wires. you should avoid plugging in a ground wire. You can usually trace which one is the ground wire. Another way to trace which is the ground wire is to use a continuity tester. Put on tester lead on the frame of the tow bar and the other lead on a tow bar connector wire and you should get a light on the tester when you find the one that is the ground wire and then mark that connector wire so you don't connect any of your hot wires to it.
Hope this helps

May 26, 2010 | 2002 Land Rover Freelander

1 Answer

Trouble locating towing wire connection


if you mean wiring does it have a tow bar if so look for wiring tucked away if theres no plug if you mean where to find wires you need to get into rear light wiring loom to connect trailer plug on car to your cars wiring

Oct 17, 2009 | 2003 Nissan Pathfinder

1 Answer

I want to tow the jeep and need to know thecorrect


Review this information and links:
- Trailer 4 Way System Diagram
- Accesories and Instructions

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Instructions
1.) Determine a suitable location for mounting the circuit protected converter in an out of the way spot near the left tail lights in the trunk or on the frame rail, if mounted under the towing vehicle.
2.) Ground the white ground wire by placing the ring terminal under an existing screw attached to a clean metal surface or by drilling another 3/32" hole and using one of the self tapping screws provided.
3.) Disconnect the tow vehicle's negative (-) battery cable.
4.) Cut the in-line fuse holder loop wiring.
5.) Using a ring terminal (3/8 inch for top terminal or 1/2 inch for side terminal), attach an in-line fuse holder (with fuse removed) to the positive (+) terminal of the battery.
6.) Route black 12 gauge wire from the fuse holder to the converter passing under or through the vehicle.
Note: When passing the wire through sheet metal always go through an existing grommet, add a grommet or use silicone rubber to insulate the wire from the hole.
7.) Attach 12 gauge wire to the fuse holder with the yellow **** connector.
8.) Reconnect the tow vehicle (-) negative battery cable. Note: See tow vehicle owners manual for any special battery reconnection and instructions.
9.) Determine if the towing vehicle has a 2 wire or 3 wire system.

2 Wire System
  • Has same bulb for stop and turn signals.
  • Some vehicles have a separate bulb for stoplights but also have a combination bulb for turn and stop. These cars should be wired as 2 wire systems, using the wires going to the common bulbs.
  • Note: Attach the crimp on spade terminal provided to the red stop wire and ground it along with the white wire.

3 Wire System
  • Has amber turn signals, separate.
  • Has separate bulbs for stop and turn signals (both red).
  • Note: Attach red wire to tow vehicles brake light circuit.
10.) Using a circuit tester or volt ohm meter (VOM), determine which wire attached to the left taillight assembly is the left turn wire. Attach the units yellow left turn wire to this wire using one of the blue wire taps provided. Determine which wire is the taillight circuit and attach the module's brown tail / license wire to it with a wire tap. Determine which wire is the stop circuit and attach the module's red stop wire to it with a wire tap (for 3 wire systems only, see step 9).
11.) Route the units green right turn wire to the right side of the vehicle. Determine which wire is the right turn circuit and attach the green wire to it with a wire tap.
12.) Install the fuse into fuse holder and test the installation with a circuit light or trailer.
13.) Secure all loose wiring with cable ties.

Testing Procedure
With the ground wire connected and all of the other circuits attached, attach the ground lead of a circuit tester to the exposed ground terminal of the 4-flat end. Activate the tow vehicle left turn, right turn, tail and stop lights one at a time. Probe the three receptacles of the 4-flat end to confirm proper functions. If testing with a trailer, make the proper connections and do the same test as the circuit tester using the trailer lights. If a function on the trailer lights does not work properly, disconnect the trailer lights, turn functions on vehicle off and recheck function with the unit with a circuit tester. Then check the trailer wiring for potential circuit problems.

I hope help you with this (remember rated this help).

Good luck.

Oct 11, 2009 | 2006 Jeep Wrangler

2 Answers

Need to wire tow bar into 1999 LT35


Hi ebrown80
You can splice into each wire in turn at the back of the lamps.No need to cut right through the origional loom completly. For a really good joint you should spot solder each connection and insulate all joints well. Tow bar sockets operate on a common earth, so no need to loop each one.
Check back of socket and you will find each pin has a number. 1---7
The wiring colours from the socket back to the loom are as follows
No 1 Pin--- Yellow Wire---Left Side Flasher
No 2 Pin--- Blue Wire------Fog Lamp.
No 3 Pin--- White Wire--- Earth. Must have good contact or nothing else will operate.
No 4 Pin----Green Wire--- Right Side Flasher.
No 5 Pin----Brown Wire---- Left Side Park Light
No 6 Pin----Red Wire-------Brake Lights
No 7 Pin----Black Wire----Right Side Park Light. Centre Pin.
I hope this helps you out
Best of Luck with it
John


Sep 13, 2009 | 2004 Volkswagen Eurovan

1 Answer

Wiring an 02 Tracker 4x4 2dr as a Toad vehicle


For my 03, I bought two tail light sockets w/ bulbs, drilled a hole in back of tail light lens and installed
the sockets, then ran 4 wire along frame to the front. When not towing, wrapped 4 wire around
ears of tow bar and secured with bungee cords. Worked for me.

Oct 06, 2008 | 2002 Chevrolet Tracker

1 Answer

Tow bar wiring


hi! first check the plug on the van,the socket on the car, then the little blue push connectors the fitters use,last but not least the lamp tabs on the lamp holder!

Jul 14, 2008 | 1999 BMW 318 ti

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