hi, i have a 92 accord lx with a jdm h22a in it.. (goin turbo very soon with custom kit)... but i was recently trying to install a tach i bought and i ran into some trouble... i was going to run the actualy tach wire on the tach itself to the wire that gives information to the stock tach in the dash. my multimeter doesnt' have the "rpm" feature so but i thought i had it figured out which wire to splice... but i'm not completly sure... does anyone know what color wire sends the tach signal to the tach in the dash?? thanks a ton!!!

 

Your tach signal should be a blue wire coming in from the upper driver's side of the firewall.

 

thanks a ton for your help!...