T Bitz Efi

[MURF]

Need Tach Adapter Or Specs To Duplicate One..tony Is On Vacation Thru End Of August..can't Wait That Long..any Help Would Be Appreciated..if Using Non Stock Ignition You Would Have Cut This Off And Not Used It. Thanx..murf
6313215100

[Scott R]

Originally Posted by MURF

Need Tach Adapter Or Specs To Duplicate One..tony Is On Vacation Thru End Of August..can't Wait That Long..any Help Would Be Appreciated..if Using Non Stock Ignition You Would Have Cut This Off And Not Used It. Thanx..murf
6313215100

I just cut mine off last weekend when I went to MSD, I can try and open the shrinkwrap up later on today.

[al lkosmal]

I lost mine and had to email Tony for directions on how to make one. I saved the email and here's a copy.

Al,

If you want to do a quick test, you can run without it. Just make sure the
"blue wire" inside the MegaSquirt is cut off as stated in the installation
guide.

The tach adaptor is basically a 5k resistor and a 24-36volt zener in
reverse. This connects to the primary side of the coil (400 volt pulses).

Let me know if this is enough, or if you still want a tach adaptor from me.

Cheers,

Tony
BITZ Racing
PS. I ended up not needing it and probably have one in the garage. Let me know if you need it and I'll send it to you.

al

[MURF]

if either of you guys can find the tach adapter i do need it for my car contact me as to shipping and payment info..thanx in advance ...murf

[rfuerst911sc]

I have one from a previous EFI project that I'll sell to get it out of my garage.

[MURF]

One Of You Guys Call Me With Price And Obtain My Shipping Info...murf

[al lkosmal]

Murf, I PM'd you last night. Email your address to me at alkosmal@hotmail.com and it's headed your way.

Al

[benzyne]

Originally Posted by al lkosmal

The tach adaptor is basically a 5k resistor and a 24-36volt zener in
reverse. This connects to the primary side of the coil (400 volt pulses).

Can someone explain this set-up to a electronic moron (me). I can solder bits together, but thats about it. What do I ask the nice person at RadioShack for and how do I know the zener is in reverse? Purdy pictures would really help.

I've got a megasquirt set-up that is partially installed. I'd just like to get a rudimentary tach signal to log AFRs and MAP before I do a partial drop to add EDIS and a 964 plastic intake.

[Won]

BEN! Couldn't wait till the olympics, could ya?

[benzyne]

Originally Posted by Won

BEN! Couldn't wait till the olympics, could ya?

busted! the question still stands.

[Won]

I think it's just a resistor and zener diode in series, perhaps something like this but with only one input?

http://www.autosportlabs.net/MJLJ_V3_vehicle_installation_guide#Interfacing_to_ Tachometers

re. http://en.wikipedia.org/wiki/Zener_diode