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Cluster M3 LED Retrofitting: Difference between revisions

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[[File:Shiftlights.jpg|thumb|Components soldered to Bosch cluster]]
Some of you asked if its possible to retrofit the M3 LEDs at the engine speed dial in a normal E46 cluster.


There is a method of "modifying" a normal E46 Cluster to have the M3-LEDs.
Well, now it is, sort of! If you have a Bosch cluster unit you are lucky, since these units share the same PCB with M3 clusters.


Its a hardware mod, so here is a small list of things which you will need:
Its a hardware and software mod, so you need to source the following components and code the cluster afterwards for it to work.


1x TPIC6C595DR(Shift register)
* 1x TPIC6C595DR (Shift register)
* 1x AC0805KRX7R9BB104 (CAP, X7R, 0805, 0.1UF, 10%, 50V )
* 10x RMCF1206JT160R (RES 160 OHM 5% 1/4W 1206 )
* 3x ASMT-URB4-YU802 (Red PLCC2 LED 3528 580mcd)
* 7x  VLME31S1T1-GS08 (Yellow PLCC2 LEDs 3528 355mcd)


1x CML0805X7R104KT50V (CAP, X7R, 0805, 0.1UF, 10%, 50V )
These parts can be ordered at your prefered electronics store. Also the amount of yellow and red may vary depending on your prefared scaling.


10x RMCF1206JT160R ( RES 160 OHM 5% 1/4W 1206 )
'''Cluster Modification Tutorial:'''
# Disassemble your cluster carefully
# Solder the shift register (green in Picture) first. It has same polarity as the shift register left to it. Just solder it like in the picture.
# Solder the cap (purple) and resistors (blue) next. The polarity doesn't matter.
# Finally solder the LEDs next. Red means yellow led, yellow means red LED - sorry for the misleading colors. Polarity is important here and GND is marked with the Black color.
# Cut away the plastic over the LEDs
# Assemble the cluster back together


3x RED LEDs 3528 PLCC2
'''Coding Tutorial:'''
* Set KVA_OELTEMP in your cluster to "aktiv"


7x Yellow LEDs 3528 PLCC2


'''How to cut the holes on the plastic?'''
See this picture as example:
[[File:Holes cluster.jpg|thumb]]


Parts can be ordered at digikey, however feel free to order it where ever you want.


'''
'''Where to buy Replacement Dial?'''
Modification Tutorial:'''
https://moman.pl/en/home/133-bmw-e46-m3-replacement-dial-converted-from-mph-to-kmh.html


1. Disassemble your cluster


2. Solder the Shift register(Green in Picture) first. It has same polarity as the shift register left to it. Just solder it like in the picture


3. Solder the Cap(Purpe) next. Polarity does not matter
'''How to adjust RPM & Speedometer from normal Cluster to M3 Cluster dial?'''
 
https://www.bimmerforums.com/forum/showthread.php?1558931-Speedometer-reads-high-by-design-How-to-fix-it!&p=22600175#post22600175
4. Solder the Resistors(Blue) next. Polarity does not matter
 
5. Finally solder the LEDs next. Red means yellow led, yellow means red LED - sorry for the misleading colors. Polarity is important here and GND is marked with the Black color.
 
6. Assemble the cluster back
 
[[File:Shiftlights.jpg|thumb]]

Latest revision as of 11:57, 7 December 2023

Components soldered to Bosch cluster

Some of you asked if its possible to retrofit the M3 LEDs at the engine speed dial in a normal E46 cluster.

Well, now it is, sort of! If you have a Bosch cluster unit you are lucky, since these units share the same PCB with M3 clusters.

Its a hardware and software mod, so you need to source the following components and code the cluster afterwards for it to work.

  • 1x TPIC6C595DR (Shift register)
  • 1x AC0805KRX7R9BB104 (CAP, X7R, 0805, 0.1UF, 10%, 50V )
  • 10x RMCF1206JT160R (RES 160 OHM 5% 1/4W 1206 )
  • 3x ASMT-URB4-YU802 (Red PLCC2 LED 3528 580mcd)
  • 7x VLME31S1T1-GS08 (Yellow PLCC2 LEDs 3528 355mcd)

These parts can be ordered at your prefered electronics store. Also the amount of yellow and red may vary depending on your prefared scaling.

Cluster Modification Tutorial:

  1. Disassemble your cluster carefully
  2. Solder the shift register (green in Picture) first. It has same polarity as the shift register left to it. Just solder it like in the picture.
  3. Solder the cap (purple) and resistors (blue) next. The polarity doesn't matter.
  4. Finally solder the LEDs next. Red means yellow led, yellow means red LED - sorry for the misleading colors. Polarity is important here and GND is marked with the Black color.
  5. Cut away the plastic over the LEDs
  6. Assemble the cluster back together

Coding Tutorial:

  • Set KVA_OELTEMP in your cluster to "aktiv"


How to cut the holes on the plastic? See this picture as example:

Holes cluster.jpg


Where to buy Replacement Dial? https://moman.pl/en/home/133-bmw-e46-m3-replacement-dial-converted-from-mph-to-kmh.html


How to adjust RPM & Speedometer from normal Cluster to M3 Cluster dial? https://www.bimmerforums.com/forum/showthread.php?1558931-Speedometer-reads-high-by-design-How-to-fix-it!&p=22600175#post22600175

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