im3crazy

This might make a good FAQ article since there are continuous questions regarding the various wiring diagrams and color codes. We could also provide a library of the wiring diagrams that have been collected on the forum. DIN WIRING AND TERMINAL STANDARDS Provided by im3crazy 3-16-2011 From Bosch Automotive Handbook, 3rd edition We all have seen the number codes on our relay and other electrical terminals, but many of us probably don't realize that these follow the DIN standard. Once you understand the standard it's much easier to troubleshoot the many grmelins that live in the '02s. I've also included the color codes and gauge size crossover to AWG sizes. It also might be helpful in future to include a common wiring scheme for the 02 models e.g. ground=brown, accessory/radio connection=violet/white; horn switch lead =brown/yellow etc. Terminal Designations (Excerpts from DIN Standard 72 552) The terminal designations do not identify the conductors, because a device with different terminal designations can be connected at the opposite ends of each conductor. If the number of terminal designations is not sufficient (multiple-contact connections), the terminals are consecutively labeled using numbers or letters whose representations of specific functions are not standardized. WIRE COLORS English .......................DIN (German) Black . . . . . . . . . . . . . . . . . . . . .Sw Blue . . . . . . . . . . . . . . . . . . . . . .Bl Brown . . . . . . . . . . . . . . . . . . . ....Br Green . . . . . . . . . . . . . . . . . . . . ..Gn Gray . . . . . . . . . . . . . . . . . . . . . .Gr Orange . . . . . . . . . . . . . . . . . . .....Or Pink . . . . . . . . . . . . . . . . . . . . . .Rs Purple . . . . . . . . . . . . . . . . . . . ...Vi Red . . . . . . . . . . . . . . . . . . . . . ..Rt Turquoise . . . . . . . . . . . . . . . . . ....Tk White . . . . . . . . . . . . . . . . . . . . ..Ws Yellow . . . . . . . . . . . . . . . . . . . ..Ge Wiring Sizes: Metric - AWG .5mm = 20AWG .75mm = 18AWG 1.0mm = 16AWG 1.5mm = 14AWG 2.5mm = 12AWG 4mm = 10AWG Ignition 1 . . . . . . . . . . .Ignition Coil, Distributor Low-Tension Circuit Ignition Distributor With Two Insulated Circuits 1a . . . . . . . . . .to Ignition Point Set I 1b . . . . . . . . . .to Ignition Point Set II Ignition Coil, Distributor 4 . . . . . . . . . . . High-Tension Circuit Ignition Distributor With Two Insulated Circuits 4a . . . . . . . . . .Terminal 4, from Coil I 4b . . . . . . . . . .Terminal 4, from Coil II 15 . . . . . . . . . .Switch-Controlled Positive Downstream from Battery (from Ignition Switch) 15a . . . . . . . . .In-Line Resistor Terminal Leading to Coil & Starter Glow-Plug Switch 17 . . . . . . . . . .Start 19 . . . . . . . . . .Preglow 30 . . . . . . . . . .Line from Battery Positive Terminal (Direct) 31 . . . . . . . . . .Return Line from Battery Negative Terminal or Ground (Direct) 31b . . . . . . . . .Return Line to Battery Negative Terminal or Ground Via Switch or Relay (Switch-Controlled Ground) Electric Motors 32 . . . . . . . . . .Return Line* 33 . . . . . . . . . .Main Connection* 33a . . . . . . . . .Self-Parking Switch-Off 33b . . . . . . . . .Shunt Field 33f . . . . . . . . .for Reduced-RPM Operation, Speed 2 33g . . . . . . . . .for Reduced-RPM Operation, Speed 3 33h . . . . . . . . .for Reduced-RPM Operation, Speed 4 33L . . . . . . . . .Rotation to Left (Counterclockwise) 33R . . . . . . . . .Rotation to Right (Clockwise) *Polarity Reversal of 32/32 Possible Starter 45 . . . . . . . . . .Separate Starter Relay, Output: Starter; Input: Primary Current Flasher Relay (Pulse Generator) 51 . . . . . . . . . .Input 49a . . . . . . . . .Output 49b . . . . . . . . .Output to Second Flasher Relay 49c . . . . . . . . .Output to Third Flasher Relay Battery Switching Relay 50a . . . . . . . . .Output for Starter Control Start-Locking Relay 50e . . . . . . . . .Input 50f . . . . . . . . .Output Start-Repeating Relay 50g . . . . . . . . .Input 50h . . . . . . . . .Output AC Generator (Alternator) 51 . . . . . . . . . .DC Voltage at Rectifier 51e . . . . . . . . .DC Voltage at Rectifier with Choke Coil for Daylight Operation Starter 52 . . . . . . . . . .Starter Control (Direct) 53 . . . . . . . . . .Wiper Motor, Input (+) 53a . . . . . . . . .Wiper (+), End Position 53b . . . . . . . . .Wiper (Shunt Winding) 53c . . . . . . . . .Electric Windshield Washer Pump 53e . . . . . . . . .Wiper (Brake Winding) 53i . . . . . . . . .Wiper Motor with Permanent Magnet & Third Brush (for Higher Speed) 55 . . . . . . . . . .Front Fog Lamp 56 . . . . . . . . . .Headlights 56a . . . . . . . . .High Beam with Indicator Lamp 56b . . . . . . . . .Low Beam 56d . . . . . . . . .Headlight Flasher Contact 57 . . . . . . . . . .Parking Lamps (in some export markets) 57a . . . . . . . . .Parking Lamps 57L . . . . . . . . .Parking Lamps, Left 57R . . . . . . . . .Parking Lamps, Right 58 . . . . . . . . . .Side-Marker Lamps, Taillamps, License Plate & Instrument Illumination 58d . . . . . . . . .Rheostatic Instrument Illumination, Tail- & Side-Marker Lamps 58L . . . . . . . . .Left 58R . . . . . . . . .Right, License Plate Lamps AC Generator (Alternator) (Magneto Generator) 59 . . . . . . . . . .AC Voltage Output, Rectifier Input 59a . . . . . . . . .Charging-Armature Output 59b . . . . . . . . .Taillamp Armature, Output 59c . . . . . . . . .Stop-Lamp Armature, Output 61 . . . . . . . . . .Charge Indicator Lamp Tone-Sequence Controller 71 . . . . . . . . . .Input 71a . . . . . . . . .Output to Horns I & II (Bass) 71b . . . . . . . . .Output to Horns 1 & 2 (Treble) 75 . . . . . . . . . .Radio, Cigarette Lighter 76 . . . . . . . . . .Speakers 77 . . . . . . . . . .Door Valve Control Switches, Normally Closed (NC) Contacts & Changeover Contacts 81 . . . . . . . . . .Input 81a . . . . . . . . .First Output on NC-Contact Side 81b . . . . . . . . .Second Output on NC-Contact Side (NO Contacts) 82 . . . . . . . . . .Input 82a . . . . . . . . .First Output 82b . . . . . . . . .Second Output 82z . . . . . . . . .First Input 82y . . . . . . . . .Second Input Multiple-Position Switch 83 . . . . . . . . . .Input 83a . . . . . . . . .Output (Pos. 1) 83b . . . . . . . . .Output (Pos. 2) 83L . . . . . . . . .Output (Left) 83R . . . . . . . . .Output (Right) Current Relay 84 . . . . . . . . . .Input: Actuator & Relay Contacts 84a . . . . . . . . .Output: Actuators 84b . . . . . . . . .Output: Relay Contacts Switching Relay 85 . . . . . . . . . .Output: Actuator (Negative Winding End or Ground) Input: Actuator 86 . . . . . . . . . .Start of Winding 86a . . . . . . . . .Start of Winding or First Winding Coil 86b . . . . . . . . .Winding Tap or Second Winding Coil Normally Closed (NC) Relay Contact & Changeover Contacts 87 . . . . . . . . . .Input 87a . . . . . . . . .First Output (NC-Contact Side) 87b . . . . . . . . .Second Output 87c . . . . . . . . .Third Output 87z . . . . . . . . .First Input 87y . . . . . . . . .Second Input 87x . . . . . . . . .Third Input Normally Open (NO) Relay Contact 88 . . . . . . . . . .Input 88z . . . . . . . . .First Input 88y . . . . . . . . .Second Input 88x . . . . . . . . .Third Input Normally Open (NO) Relay Contact & Changeover Contacts (NO Side) 88a . . . . . . . . .First Output 88b . . . . . . . . .Second Output 88c . . . . . . . . .Third Output Generator/Alternator & Voltage Regulator B + . . . . . . . . .Battery Positive Terminal B - . . . . . . . . .Battery Negative Terminal D + . . . . . . . . .Generator Positive Terminal C - . . . . . . . . .Generator Negative Terminal DF . . . . . . . . . .Generator Field Winding DF1 . . . . . . . . .Generator Field Winding 1 DF2 . . . . . . . . .Generator Field Winding 2 Alternator J........Excitation winding positive K........Excitation winding negative Mp.......Center point terminal U, V, W . . . . . .Three-Phase Terminals Turn Signals (Turn-Signal Flasher) C . . . . . . . . . . .Indicator Lamp 1 C0 . . . . . . . . . .Main Terminal Connection for Indicator Lamp Not Connected to Turn-Signal Flasher C2 . . . . . . . . . .Indicator Lamp 2 L . . . . . . . . . . .Left-Side Turn Signals R . . . . . . . . . . .Right-Side Turn Signals Additional Wiring Color Coding (earlier and later models) Memory (+12v Constant) Gray/Red Ignition (+12v Switched) Violet Ground (-) Brown Illumination White/Blue Dimmer (none) Power Antenna White S p e a k e r s Right Front (+) Gray/White Right Front (-) Gray/Brown Left Front (+) Gray/Red Left Front (-) Gray/Violet Right Rear (+) Black/White Right Rear (-) Black/Brown Left Rear (+) Black/Red Left Rear (-) Black/Violet MORE DETAILS TO BE ADDED E.G BMW 2002 wiring color coding; various wiring diagrams; wire harness layout and sizing etc. END

You sound like you are on the right track. What make and model is your alarm? can you post the wiring schematic that came with it, or provide the url for it. It also helps to do a simple wiring diagram. My concern about your relay was if the relay itself could handle the power to the starter solenoid trip. It's important to know the contact rating for the relay. I thnk 500MA might be too small. The starter solenoid lead (2.5 Black wire from terminal 50 on ign switch) runs through your alarm relay disconnecting the circuit when in armed and when in alarm condition until reset with code/transmitter.

STOP! don't power up yet. If I read your spec correctly you will need a relay in the ignition switch to solenoid circuit. The 500 ma rating 1/2 amp is not enough to handle the solenoid pilot draw. You can use a 3 amp @12vdc relay triggered from the alarm output to handle the current. without this relay u will likely immediatly or eventually burn out the on-board relay/circuit.

If you're primarily concerned about getting rear ended try these. Ive mounted two at the headliner level with a "trailer" module that gives me stop/tail/turn. These are freakin lasers and tailgaters back right off! http://www.commandelectronics.com/led-tail-lights.html

WHen I've seen this it's been a failure of the blinker relay - IIRC the lead for the dash indicator is fed from the relay output in the blinker - see 31 in diagram attached and lead #8 which lights E on the dash pod. Failed components or incorrect flasher substitutes can also cause the blinker to continuously cycle. BMW 2002 Electric Diagram.pdf

It's always tough to value a vehicle, but comprables are always helpful. Check out the 2002AD sites ads. They are usually priced a little higher than what they get, but it's close. Ebay will also sell you their recent sale info on similar cars, I believe, I've never done that. http://www.2002ad.com/pages/carsforsale.cfm Best of luck with the eventual sale. Dave in Baltim02e MD

They are prob from the emissions control relays - check this out and compare to the harness shown: http://www.bmw2002faq.com/content/view/18/32/ good luck.

Check out this link from Pierre on the FAQ: http://home.roadrunner.com/~pchamaa/2002_auxilliary_lamp_brackets.htm I'm thinking of changing over to these because my bumper mounts vibrate/ oscillate too much- it does however get driver attention way down the road.

Check out this link from Pierre on the FAQ: http://home.roadrunner.com/~pchamaa/2002_auxilliary_lamp_brackets.htm I'm thinking of changing over to these because my bumper mounts vibrate/ oscillate too much- it does however get driver attention way down the road.

It sounds like the resistance wiring in the tank assembly has shorted. You can prove this out by removing the sender unit and measuring the resistance reading with a multimeter, or the gas gauge. You can immerse the sender in kerosene safely and move it up and down to watch the resistance response, or the gas gauge. Once you know the linearity or not of the reading, you can make a decision to replace the sender or seek further cause.

I can confidently recommend Smith Upholstery and Auto Glass in Baltimore whom I have used successfully for 35 years. Latest work was a custom headliner for my 98 M3. The job was done to perfection, and far exceeded the original. http://www.smithautoglass.com/home.nxg Dave in Baltimore

It doesn;t get much better than Bill's FAQ on decal placement: http://www.bmw2002faq.com/content/view/95/32/ Dave in (snowy, salty, and wet) Baltimore

Also had this happen due to exhaust pipe/end can heating up tank. I had to install the later heat shield and it solved the problem, I measured the outlet gas temp at over 110 deg F.

I agree with good locksmith and also suggest .... yes, the dealer should be able to cut key from VIN.

I have to agree about the over torquing. Just tried to change over to snow tires and couldn't get the nuts off. Broke two sockets with a breaker bar and extension and decided to stop before I broke off the studs. This was the first year I had the local shop mount my summer tires- it was a mistake. Took it back and got them to pull them off- they were on at about 110-120 ft lbs. The mechanic swore that's what they regularly use. This cannot be right- I thought the spec was 45-55 ft lbs for these.

Wtb long neck tank that fits 1970 opening. Non tii. Shipng to baltimore md us. Need no rust in/out clean tank. Thanks.

I have used the 3M citrus based product with a rough scotchguard pad- slow going and marginally effective. Also have used the older 3M petroleum-based product (item 08984). This works very well, but requires skin and breathing protection - it has benzenes in it which are a known cancer risk. Any product containing these is an equivalent to the 3M product- Ingredient listed % by Wt XYLENE NONANE OCTANES (ALL ISOMERS) ETHYLBENZENE TOLUENE BENZENE Don't drink this stuff, but you could probably add it to your gas tank with good octane improvement

Sounds like u toasted the heater bearings (squeal) and motor windings (smoke), maybe also the heater resistor assembly (more smoke). High resistance may have been created by water shorting out components.