aftermarket tacho problems

[badass77impala]

i cant get the tacho to respond with the tach sender wire to the brown wire hanging on the passenger side and nothing i even pulled the plug off of the coil pack and made sure the wire has good conductivity but the tacho sits on zero. i wish it was old school and just hook it up to the ground on the coil lol

[krawczuk]

i cant get the tacho to respond with the tach sender wire to the brown wire hanging on the passenger side and nothing i even pulled the plug off of the coil pack and made sure the wire has good conductivity but the tacho sits on zero. i wish it was old school and just hook it up to the ground on the coil lol

hi, you got all the power wires and ground wires conectred up properly , and is the tacho set up right , some have a switch or wire to cut ..
mark k

[badass77impala]

all the wires are hooked up properly. im thinking the signal from the module isnt strong enough or the tach to pick up properly