Hi Guys

I have after market tachometer, it was not working so i removed the back cover of it , i have got wires mainly one is RED other one is Black, and also i see burned wire from inside the tachometer, so i realized that is that the reason it does not work ? what would be that wire to where it is connected ? , i tried to connect Red to the Iginition negative and black to ground earth then that worked but when i start the car it goes to the 6000 rpm and stay and when i increase gas it is increasing, but i don't think so that is the correct way it is connected
what do u think guys, i want to make my older tacho to work or just throw it away and buy one , if it works in wain i am buying a new one
thanks
regards
sumith


3

Red is probably battery +, black is earth, and the burned wire was coil -.

hI ddgonzal

i also thought so i fixed red to 12 V and black to ground then suddenly tacho went to maximum level , so i got scared to fix it and removed back , do u have any idea where the broken wire should be connected into the tacho ?

thanks
regards
sumith

Hi ddgonzal

It is clear , it is Coil Negative (green colored wire),it has been broken from the scratch i cant find where it is coming from ?

thanks
regards
sumith

Attach file:

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  Tachwiring.jpg (38.59 KB)

I do not know. I've had no success fixing broken tachometers