LED Everything – Z3 M Coupe
, updated:

LED Everything – Z3 M Coupe

I went on a strange quest to convert almost every bulb on the Z3 M Coupe from incandescent to LED. I think the results look great. Note, I’ve also bypassed the dimmer rheostat, so I cannot attest to any dimming capability or effectiveness. I am also keeping the headlight low and high beam 9006/9005 for now as they work well enough for me.

All the previous how-to guides are now a bit dated, or missing pictures. Below is a running list of LED’s you can use to convert your M Coupe, M Roadster, Z3 Coupe, or Z3 Roadster.

Note: To avoid hyper-flashing turn signals, you’ll either need to spend $200+ on this funky computerized flasher relay, or spend $5-50 modifying your existing flasher relay. See how-to below.

Exterior

LocationDetailsQuantity
Front Turn Signals1157 LED Bulb – Dual Function 27 SMD LED Tower – BAY15D Bulb Amber – 2 Pack1
Rear Turn Signals1156 Boat and RV LED Light Bulb – (18) SMD LED Tower – BA15S Retrofit Base – 325 Lumens Amber- 2 Pack1
Rear Brake Lights1156 Boat and RV LED Light Bulb – (18) SMD LED Tower – BA15S Retrofit Base – 325 Lumens Red – 2 Pack1
Rear Parking Lights67 LED Light Bulb – (12) SMD LED Tower – BA15S Base Red2
Front Bumper194 LED Landscape Light Bulb – 5 SMD LED Tower – Miniature Wedge Retrofit – 95 Lumens Natural White2
Side Turn Signals194 LED Landscape Light Bulb – 5 SMD LED Tower – Miniature Wedge Retrofit – 95 Lumens Amber2
Backup Lights1156 LED Light Bulb – (51) SMD LED Tower – BA15S Base with Lens Natural White – 2 Pack2
License Plate Housing194 LED Landscape Light Bulb – 5 SMD LED Tower – Miniature Wedge Retrofit – 95 Lumens Natural White2
Third Brake LightTo be continued.

Interior

LocationDetailsQuantity
Rear Coupe Cargo6451 LED Bulb – 6 SMD LED Festoon – 42mm Warm White2
Interior Overhead3710 LED Bulb – 6 SMD LED Festoon – 38mm Warm White1
Interior Overhead MapBA9s LED Bulb – 5 SMD LED Tower – BA9s Bulb Warm White2
Gauge Cluster small bulbsB8 LED Bulb – SMD Instrument Panel LED Warm White
*note that you can probably get by with 4 to illuminate parts of the dials, the rest are individual warning/error bulbs. You also have to slightly bend the tabs to make a secure fitment in the cluster.
18
Gauge Cluster Primary bulbs194 LED Landscape Light Bulb – 5 SMD LED Tower – Miniature Wedge Retrofit – 95 Lumens Amber
*note, you may prefer warm white
3x
HVACT1-3/4 Wedge Base Socket – Wired 74 Socket
*note, must cut and solder in. One housing must be shaved down to fit the vertical position.
2
HVAC, Cigarette Light, Headlight Switch74 LED Bulb – 3 SMD LED – Miniature Wedge Base Amber
*two for HVAC, one for cigarette light, one for headlight switch
** you may prefer warm white vs amber
4
VDO Gauges194 LED Landscape Light Bulb – 5 SMD LED Tower – Miniature Wedge Retrofit – 95 Lumens Amber
* you may prefer warm white vs amber
3

Hazard / Flasher Relay

When you switch over to LED lights in the turn signals, you’re going to get hyperflash when signaling. You may like that, or may not. You have a few options to solve this. The modify solution is described below.

How-to: Modify your 7 pin hazard / flasher relay to work with LED

credit goes to this post (and this pdf), but I will repeat it here for internet longevity. If your relay does not look like the one above, well then you probably pulled the wrong relay out from under the hood, or its not an original bmw relay.

Required Parts, Skills and Tools

  • 1 original 7 pin relay
    • Z3 E36 Z3 M Relay for hazard-warning lights K16
    • 61351392414
      61361388533
      61361388547
  • 1 diode. I sourced 10x of these from Mouser electronics
    • Mouser #: 863-80SQ045NRLG
    • Description: Schottky Diodes & Rectifiers 8A 45V
  • soldering iron, solder
  • small flat head screwdrivers 2x, 1x small drill bit, 1x small pliers

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