AHA! One revolution is four ignition events, so it DOES run at tach speed. All I need is an additional tach output. Surely that is possible. The question is, how? I just checked and the tach output from MJ is already connected to the VSS input on the cruise control. I may just have to make sure the ...
I've been trying to work through the math on this with limited success and I think it looks like I need about a 4:1 multiplier so maybe a driveshaft mounted Vss could work with 4 magnets but it'd be cleaner if I could use an output from the MJ. Specs I have say the input is 25hz @ 10mph + 20hz for e...
I'm using a Ford cruise control which uses a 5v input for speed information with a pulse rate around 100hz for cruising speed. So tach data would need to be divided by about 20 to work. I don't see a problem with using a 12v signal instead of 5v. Is there a way to set up this output from the Megajol...