Trigger Signal: MSD 6A, 7AL ??

[Peter D. Hipson]

sounds like points, then. Points trigger on a falling current (points
opening after being closed), so the MSD test would be right. (I know, it
sounds backwards, but it works--a collapsing magnetic field will generate a
*much* higher voltage)

At 10:30 PM 4/10/99 -0700, you wrote:
>Does anyone know how the trigger signal for the MSD ignition boxes look 
>like?  This is thru the points wire (white).  I assume it is a rising 
>signal because points output a rising signal and also the testing 
>procedure for the MSD is to ground and release the white wire, where the 
>trigger is upon the release from ground.
>
>Thanks in advance,
>
>Paul Ko
>pko at mindspring.com
>http://www.mindspring.com/~pko
> 
>Formula SAE UCDavis Team Captain 
>http://mae.engr.ucdavis.edu/~fsae
>
>
>
>
>
>
Thanks, 
        Peter Hipson (founder, NEHOG)
        1995 White NA Hummer Wagon