Memory Tachometer

[GRgraphics]

Does anyone know how to hook  a tach to a legends car ?
I  baught a used tach and need to know how to wire it.. It has a red,black,green and white wires
please help

[JGRacing]

Who makes the tach?  They would probably be able to send you a manual or maybe even have it available online. 

[Shawnben]

I have an auto meter. It is wired as followed. Green to coil -, white to dash lights, Red swiched power, Black to yellow wire from ingnition box. I have red coils and red ignition box. Hope that helps.

[JGRacing]

Here is their website if you are not able to get an answer here.  (www.autometer.com)  I don't have a legends car yet, so not sure on the wiring yet.  Under the tech information, you might be able to find wiring details.  I was able to get wiring information from them on a used tach I bought a few years ago, and they even repaired it for much less than buying a new one. 

[JGRacing]

Just found this under the tech info.  I guess the wiring colors are standard regardless of the type of motor.

• Red = key on power supply

• Black = common chassis ground

• White = dash lighting power

• Green = tachometer signal for standard or electronic ignitions

[GRgraphics]

The tach is a autometer pro comp .. I cant figure this thing out

I have cut both wires brown and orange for a 4 cyl

and the tach reads 1/2 what it should @ 4000rpm it reads 2000rpm

[qweedqwag]

On my wiring diagram that came with my car from 600 the green wire on the tach gets hooked into the black wire on the red ignition box, if you dont have the red box  im not sure.

Mike

[RickyBobby]

I just picked up some new switches from Longarce so I pulled the dash out and painted it.  I put everything back in and hooked the Tach back up and it is not working.  I saw the white hooked up, the black was grounded and the green to the connection.  I was like what is wrong with this thing.  I cut the memory wiring off as the switch was busted.  Now that I read this post and see there is supposed to be a red wire I will have to go hunting for it and plug it in.   

[justfreaky]

Not sure, but this might help:

http://dcrmessageboard.yuku.com/topic/3501


Steve

[justfreaky]

GRgraphics,

 Please post what you come up with on the wiring, as I am looking at the same tach.


Thanks,

Steve

[RickyBobby]

So I hooked up the red wire and it is still not working.  The memory switch was broken so I just cut the wires off.  Would that have anything to do with it?

[RickyBobby]

I called autometer yesterday and it turns out for the tach to work correctly the memory switch has to be connected.  Wired it back up and it works fine.

[justfreaky]

RB,

Thanks for that bit of info!
I wouldn't have thought it would matter.

Steve