chango de naranjito

I plan to do a instalation for a friend,and whant to use a msd 6a ignition box here is my question,can I use an igniter to sen the signal to the white wire of the msd? I plan to use a toyota tacoma igniter becose I know it uses a 5v signal to fire 3 coils(I work for toyota) and send the coil- to fire the coils it that posible?

muythaibxr

I don't know, we used a Crane unit to fire leading on a friend's rx7 by letting the crane take a signal from the stock ignitor.

I've never used the MSD unit.

Ken

chango de naranjito

the other thing that came to my mind is using a Bosch BIP373 Coil Driver to send the signal to the msd because the msd uses the negative terminal of the coil to fire. and triger the driver from pad1 of the v3.57 what you think?

muythaibxr

Again, I don't know anything about the MSD unit. I'd need to see the manual for that.

Ken

elturbonitroso

you can drive the msd directly from the - side of the led but i dont know if you can use the spark output invert with the rotaty engines.

pmrobert

GIS is your friend - http://www.megamanual.com/ms2/msd6a.htm

elturbonitroso

that should work.

chango de naranjito

ok I got it!!!I dont know why I dont think this before, is more easier to conect the stock coils from a turbo II with the shock igniters and conect the msd from the negative terminal of the coils to the white wire of the msd box to triger the msd unit

chango de naranjito

thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

elturbonitroso

or if you want a clean look you can do the 2n2222 circuit if its prove that works and you dont have to use the t2 igniters.

chango de naranjito

but I think the 2n2222 transistor trigers with a 5v signal and the signal of the leds is a ground swithing signal, I am right?

elturbonitroso

i think that you're right but option 1 i think that you can use the top of r26,27 and 29 for that or option 2 use a 5volt pull to trigger the 2n2222.

pmrobert

Re the 2222 - it makes absolutely no difference logically if vcc(+) is constantly provided and the ground(-) is pulsed as opposed to constantly grounding the appropriate pin and pulsing the vcc(+). GIS these terms: NPN, PNP, source vs sink vs drain, pullup, pulldown. With a little creativity, careful deliberation and self education you'll be able to fully understand the concept of using a transistor as a high speed switch and be very comfortable with what you come up with. Yes, you can switch 12v with a logic level (5V) pulse.

-Mike

chango de naranjito

pmrobert

Just trying to help. My apologies.

chango de naranjito

no no no sorry I dont mean that, is just dont understand all the terms I am new to all this electronic stuff you know and whant to learn everything I can from you

pmrobert

Apologies for the inadvertent apology, I misinterpreted your message! You have PM....

-Mike