Re: To Phillip on the MSD and Opus system

[Randy Wilson <randy@taylor.infi.net>]

>place because the trigger uses (ferrite rods) that will not trigger the
>MSD directly or any other aftermarket ignition for that matter.  I tried
>some years ago to come up with a replacement trigger device but the
>later requirement for the fuel injection prevented a replacement.  Maybe


Been there... too many times. Bosch injection does not like the square
wave trigger signal (tach) that comes out of these type of ignition
boxes.



>paper work I have shows the opus on 77 to 80 Jaguars so your 73 could be
>a bit different but we can make it work. The opus will have to stay in

>As long as your stock system works what you need to do is connect in
>front of the coil. My papers show a White and Green wire on coil plus
>(+) and a White and Black wire on coil minus (-).  If you are hooking up
>a MSD 6 series box follow the instructions in the box and connect as
>follows:
>MSD                                
>Orange to Coil (+) on coil    
>Black to Coil (-) on coil
>Stock                                       
>Disconnected from coil
>Wht-Grn to Small Red wire on MSD
>Wht-Blk to White wire on MSD box
>


Since I'm coming in to this in the middle (as I assume the rest of
the list is), I'm assuming this is a 73 V-12, an E-type. This wiring
scheme may work with a D-jet XJ*. It will also work with the E-type,
except the induction tach will read a constant 0 rpm. I have been 
through this on many different types of cars. There is always a way
to make it work, but in a lot of cases you must *really* want to
use the MSD-type ignition.



   Randy K. Wilson
     randy@taylor.infi.net

---

References:

• To Phillip on the MSD and Opus system
• From: Jeff Strom <jstrom@msdignition.com>

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