im designing a SIMPLE and CHEAP shiftlight for our cars, but ineed to know the voltage range on the tach wire to do so, and my car is in the shop right now. anyone know it?

 

GOOD idea, i am not sure, but could find out at work tomorrow!

 

yea definately do so if you can, i have a GSR, and im almost positive the voltages are the same for all hondas, but i just needa know the range...gsr and type r's are nice into the 8000 range, see if you can find out some intervals for me, id really appreciate it. thanks!

 

yea i work at acura, so i will find out when i have no cars.

 

that would be great, its probably in a manual or something too. write yourself a note so you dont forget, haha. thanks a lot.

 

ok the from the acura integra manual for 1996, but all are the same. The TACH on the guage cluster is derived from :

The Ignition Control Module inside the distributor, which then takes those pulses into a Tachometer Driver Circuit which responds to the guage cluster.

In easier sense, there really is no voltage range.

For every 200 pulses per minute, the tach will read 100rpms.

The only feasible way i see it to work right know. Is to figure, what Digital Tachometers do to change that pulsing into a reading, and somehow trigger it. I dont know, my brain is fryed, dealt with way too many intermitent wiring nightmares at work today. I could try to think of something tonight or tomorrow.

BTW I have that 96 integra manual with me for the weekend....borrowed it so ask away and i will search.


edit- i just confused my self from reading my post. i will read over the manual again and put more feedback into that i just said wrong or whatever


[Modified by vw-honda-hatches, 10:17 PM 12/13/2002]

 

lol, i have everything done, i have all the circutry and everything figured out. i just needa know the frequencys for the certain RPM's, i was thinking of making it adjustable from 5k-10k . send me an IM on aol, my screen name is drdavidge. thanks a lot, peace.

 

if you do this i would be interested on it as well, let me know what you did, i don't know anything about electrict things, but i wanna make a shift light made out of a LED

 

yep, thats what im doing. ill prob sell them for 30-40$ shipped. what do you think?

 

a lil expensive, but i could think about it

 

frequencys?

 

they are kinda expensive to make, its gonna be rpm adjustable from 6000-10000rpm and the dials for the percise adjustability are pretty expensive

 

You're gonna need a digital voltmeter that has a very high refresh rate in order to get what you want... even at idle if you take a voltmeter reading for a standard voltmeter it will look as tho you are getting a solid 12volts +.. I would just hook up an oscilliscope... That'll get you the frequency values that you are looking for with some very good accuracy... Peace