tach problems

[sinezter]

ok so i have a 89 civic hatch dx, and i swaped in a zc... but anywayz i just bought a tach and i got the ground hooked up and the power... but when i hooked up the green rpm wire to the blue rpm wire inside the dizzy and turn on the car and nothing happend... any ideas?

 

[LarsonSi_0091]

did u cut the like four wires that make a loop in the back i think their brown and white?

 

[sinezter]

na, the only wire i cut was the blue one comeing from the dizzy

 

[LarsonSi_0091]

well u have to cut them but your not supposed to cut it off the blue one your just supposed to tap into it.

 

[sinezter]

ok well ima try this all agin, but is there a way to just hook it up to the ecu? if so wat pin would i hook it up to?

 

[LarsonSi_0091]

im not sure on that one i just tapped my into the blue wire on the dizzy hook up to the postive and negitive and found a wire in the dash that lites up something for the illumination.

 

[sinezter]

ok nvrmind i fixed it, apparintly u need to also connect the light wire for the rpm to work..

 

[sinezter]

aight now i have a new problem, the light turns on on the tach, but its not bright at all... i cant see the tach for shit at night time, is there a way to fix this?

 

[LarsonSi_0091]

what did u hook up to for the illumination?

 

[sinezter]

i hooked it up to the dim lights switch, and there was three wires comeing from that and i hooked it to the middle black wire

 

[LarsonSi_0091]

did you try moving the dimmer switch to make it more bright or less bright try that once. cuz i hooked mine up to the rear defrost wire that lights that switch up and my tach is bright as all hell.

 

[sinezter]

i tryed that alredy and it dosnt dim the tach or make it brighter, it just stays the same... so i gess ima try and hook it to the rear defrosters, but what wire did you hook it to?

 

[LarsonSi_0091]

i got a test light and tested to see which wire turned hot when i lite the lights up.