CDI ignition fitted. Now no tacho

[luvemfast]

Got the CDI box fitted and now the tacho isn't working in my 280ZX.

I thought that it would be ok, but apparently not.

It was installed by an auto elec. Was he trying hard enough? I wonder.......

 

Anyone able to help?

[Zedman240®]

You don't need a tacho; just install a shift light. Best thing I did.

[luvemfast]

I like the tacho. Helps gauge speeds and getting to know the car better.

I think they're important!

[benny]

You need to work out where the tach is drawing its signal from and which wire is being used to sense... it may just be a case of the tach wire being on pos not neg or visa versa.

[luvemfast]

It's a negative trigger, will check.

Hopefully, the guys just a dumbass! 

[benny]

if no luck you may need a tach signal convertor or something... do you have a spare tach?? Can be easier to test with one in the engine bay.

[Whoray]

Just happens I have an aftermarket tacho that's never been used.

[luvemfast]

Maybe we'll need to set that up, before dyno tune 

[Riceburner]

Does the CDI have a tach output?

[Retro Z]

Just install am aftermarket tacho. I installed a 5" autometer one, fits perfectly in my 240z so may fit a zx aswell (only 3 wires) +, -, coil neg

[NZeder]

Does the CDI have a tach output?

good point you might need a tach adapter to work with the CDI unit. What brand of CDI are you using?

[luvemfast]

Summit Racing Street & Strip® High Vibration Multi-Spark Digital CD Ignitions SUM-850606

Tachometers

The yellow wire on the Summit Racing Street & Strip Ignition provides a

trigger signal for tachometers, shift lights, or other add-on RPM activated

devices. This wire produces a 12 volt square wave signal with a 20% duty

cycle.

Some vehicles with factory tachometers may require a tach adapter to work

with the Summit Racing Street & Strip Ignition. If your GM vehicle uses an

inline filter, it may cause the tach to drop to zero on acceleration. If this

occurs, bypass the filter. For more information on tachometers, see page 4.

 

Maybe a monster tacho with shift light is in order.......

[benny]

get a tach adapter... monster tachos dont make you go faster

[luvemfast]

monster tachos dont make you go faster

Of course they do!

You see fully HEKTIC Falcodores with them all the time..........

[Zedman240®]

All those automatic Lancer coupes have monster tacho's in them...it must do something...

[Riceburner]

Can't run it from the coil due to the multi spark setup, Has to come from the CDI output. With or without tach adaptor will depend on what voltage/signal your tach requires, do you know what it uses?

 

Being a later model, you may get lucky and be able to hook it straight up.

[lightmaster240z]

What wong with my Lancer it's fully sick now

[NZeder]

What wong with my Lancer it's fully sick now

now it can match the mirage panther with its 8 speed super shift from the 80's

[luvemfast]

Can't run it from the coil due to the multi spark setup, Has to come from the CDI output. With or without tach adaptor will depend on what voltage/signal your tach requires, do you know what it uses?

 

Being a later model, you may get lucky and be able to hook it straight up.

I investigated it aaaaggggeeeesssss ago and thought it was a straight hook up.

Will look into it next week when it's back here.