Can you help me find the "brown wire" that is the Tacho signal?
The car in question is a 2010 Alto LXi. I have gone through your thread completely but in your case the speedometer console gets two couplers viz 'K' & 'L' whereas the Alto LXi that I am working has only one coupler where I have posted the images in the link below.
MASS is not helping me with the ECU pin diagram hence I have turned to this thread. I am apprehensive if Maruti has removed the "Brown wire" altogether after 2009 facelift (IIRC?) as Alto 800 does NOT get a tachometer in any variants. So if you have any idea please point out the brown wire that I must tap for the tacho to work.