I need some wire diagrams for a 1997 BMW 328IS.  This site shows diagrams for a convertible, 328I, are they the same wiring patterns for these cars reguardless of the model? I am installing an alarm in this vehicle.

Also I need wire diagrams for a radio in a 1998 BMW M3.  This site shows the 3 series.  Are all the wires the same for the 3 series or do they change with the models, e.g. convertible which is what this car is that I am working on.

Item	Wire Color	Polarity	Wire Location
12V	red/wht or red	+	ignition harness
STARTER	blk/yel or grn/blk	+	ignition harness
IGNITION	green	+	ignition harness
ACCESSORY	none
SECOND ACCESSORY	pur/wht or purple	+	ignition harness
TACHOMETER	black		instrument cluster *2
POWER LOCK	white/red	+	factory alarm plug *1
POWER UNLOCK	blue/red	+	factory alarm plug *1
PARKING LIGHTS +	gry/pur, gry/yel *3		headlight switch
PARKING LIGHTS -	blue/green (hazards)		factory alarm plug *1
DOOR TRIGGER	*4	-	factory alarm plug *1
HEADLIGHTS	yellow		headlight switch
WIPERS	blk/gry and blk/blu	-	steering column
LF WINDOW UP/DN	blk/wht - pur/wht	A	body electr control mod *5
RF WINDOW UP/DN	blu/grn - yel/grn	A	body electr control mod *5
LR WINDOW UP/DN	blk/yel - blu/grn	A	relay module *5
RR WINDOW UP/DN	wht/yel - blu/red	A	relay module *5
TRUNK/HATCH PIN	brown/white	-	factory alarm plug *1
HOOD PIN	purple/green	-	*6
TRUNK/HATCH RELEASE	none
FACTORY ALARM ARM	*7
FACTORY ALARM DISARM	*7
HORN TRIGGER	brown/red	-	steering column
BRAKE WIRE	blue/red	+	at brake pedal switch
LOCK MOTOR	none	non	none
UNLOCK MOTOR	none	non	none
DISARM DEFEAT	none	non	none
DISARM NO UNLOCK	none	non	none
DOME SUPERVISION	comes on with unlock
SPEED SENSE	none	non	none
SUN ROOF OPEN/CLOSE	none	non	none
SUN ROOF LIMIT	none	non	none
LF SPEAKER	none	non	none
RF SPEAKER	none	non	none
LR SPEAKER	none	non	none
RR SPEAKER	none	non	none
RADIO 12V	none	non	none
RADIO GROUND	none	non	none
RADIO SWITCH	none	non	none
RADIO ILLUMINATE	none	non	none
POWER ANTENNA	none	non	none
Notes:	NOTE: This vehicle is equiped with the EWS II immobilizer system that need to be bypassed when adding a remote start. Use DEI module 555B. *1 The alarm plug is a black 12 pin plug located just behind the glove box. It is mounted with the pins facing you atop a vent just to the left of the body computer. Other wires at the alarm plug are: 12V- red/white; Accessory- purple/white; Siren- black/blue; Ground- brown/orange. Do not use the power sources at the alarm plug to operate high-current devices. The other side of the siren wire is mounted in a 2 pin plug at the passenger rear corner of the engine compartment. The other wire in the plug is a brown ground wire. DEI recommends attaching the siren at this point. *2 The wire is located in a white connector behind the instrument cluster. Do not unplug the white connector with the ignition on or turn the ignition on with the plug disconnected. *3 These wires are the separate left and right parking light wires. Use both wires and isolate each. *4 Door triggers are brown/gray for the drivers front door, brown/blue for the passenger front door, and brown/white for the rear doors (if equipped). Use all three wires and diode isolate each. *5 The body electronics control module and the relay module are located behind the glove box. When using a 530T and locking and unlocking with the key will cause the windows to travel full direction. The 529T will not alter the factory operation. *6 Located in a single pin connector next to the factory alarm plug. *7 If equipped with a factory alarm, the alarm will be plugged into the factory alarm plug. The only way to arm and disarm the factory alarm is with the factory remote. If your planning on using the 8360 pre-wired alarm harness the factory alarm must absent or removed.

sorry, no stereo wiring for the '98 M3.  get a harness:   http://www.installer.com/wires/70-8591.jpg