hey iive been trying to install a tach guage and idk what wires goes with wat . i have a autometer tach...... theres red white and green wires.... i dont knoe wat wires goes with wat . some pple told me that u could go through the ecu .. and behind the cluster...... i dont know which wire to tap it ti . i dont have a dmm also
can anybody here show me wat wires go with wat

 

any1???

 

This wire is the rpm signal wire, dude this really isn't that hard.