High Current Injector Driver Circuit

[Flexicoker]

Hey guys, I'm at step 65 in the megamanual for building my MSII. In the near future I'd like to use the MS to control spark with the stock distributor (and EDIS in the more distant future), but I want to let the stock distributor control timing at first so I can work the bugs out without having to worry about spark. So, is it alright to install this circuit and just not wire it up until I'm ready to?

 

Thanks,

Eric

[Noddle]

Hey guys, I'm at step 65 in the megamanual for building my MSII. In the near future I'd like to use the MS to control spark with the stock distributor (and EDIS in the more distant future), but I want to let the stock distributor control timing at first so I can work the bugs out without having to worry about spark. So, is it alright to install this circuit and just not wire it up until I'm ready to?

 

Thanks,

Eric

 

I'm no expert, but this is what I read at part 65, when I did mine

• If you are not using the IGBT high current driver circuit, but want to use the MegaSquirt-II output to control an ignition module (7 or 8 pin HEI for example), jumper JS10 to IGN to bring the signal out on DB37 pin #36. You do not need a pull up, the processor port has one enabled already (at 5 Volts). Skip ahead to step #66.

So I went straight to 66

 

also at 50, I selected 50b to let the dissy control spark for now (get timing from the negative side of the coil for MS), and modify later to 50a for when I go EDIS

 

Nigel

 

edit : not sure if this what you were after.

[Matt Cramer]

It's perfectly OK to install an ignition output meant for later use and not connect it to anything when you first get it running.