Boyer install guidance needed

Guys,
Wondering if you can help me with my Boyer Ignition wiring for my 71’ 750.  I’ve gone through the instructions and have a few questions, I’ve copied the instructions from Old Britts where I got a bit confused (http://www.oldbritts.com/boyer_install.html):
 
12) Remove the white-blue wire from the ballast resistor between the two ignition coils. The color of this ignition power feed wire may be different on some machines, if so check using a test light or meter to find the live (-12 volts) when the ignition is switched on. The ballast resistor is no longer required and can be removed.

-I don’t think I have a Ballistic Resistor, does this seem right? Looking at the Workshop Manual it looks like I should for a 1971.  If I correctly don’t and possibly have an earlier wiring harness, what is my ignition power feed wire?  From what I see I only have the four white wires coming from the ignition that originally went to the coils.


13) Remove the red wire from its earthing point on the end of the condenser pack. Reconnect this to the + marked terminal on the left-hand ignition coil. The condenser pack is no longer required and can be removed.

-Probably a dumb question but are the condenser packs the two small red units that sit under the coils?  Am I reading that these are no longer needed?

16) Connect the red wire from the transistor box as follows: first connector to the earth tag on the end of the condenser pack, second connector to the + terminal of the left-hand ignition coil with the red wire already connected to it.

-This one is confusing me a bit, is this just saying take the two red condenser connections and add the red from the transistor box and screw it into the + terminal of the left coil?

19) Connect the white-blue wire (the one removed From the ballast resistor) to the white wire from the transistor box.

-Back to step 12, which wire would be my power feed, I’m only seeing the four whites coming from the ignition that come to the coils?
 
 
Any help or clarification you can give would be extremely appreciated!
Thanks
Paul

you should have bought a tri spark, lots of info on here about them :mrgreen:

paul_b said:

I don’t think I have a Ballistic Resistor, does this seem right?

Looking at the Workshop Manual it looks like I should for a 1971. If I correctly don’t and possibly have an earlier wiring harness, what is my ignition power feed wire? From what I see I only have the four white wires coming from the ignition that originally went to the coils.

Click to expand...

If there is no white/blue wire and no ballast resistor, then your Commando would appear to have the pre-'71 wiring (could it actually be a late '70 model?), so connect the "hot" (ign. on) white harness wire to the Boyer box white wire.

paul_b said:

Probably a dumb question but are the condenser packs the two small red units that sit under the coils?  Am I reading that these are no longer needed?

Click to expand...

Yes, the (red?) condensers can be completely removed.

paul_b said:

16) Connect the red wire from the transistor box as follows: first connector to the earth tag on the end of the condenser pack, second connector to the + terminal of the left-hand ignition coil with the red wire already connected to it.
This one is confusing me a bit, is this just saying take the two red condenser connections and add the red from the transistor box and screw it into the + terminal of the left coil?

Click to expand...

Simply wire the coils (in series) and the (red) to earth/ground according to the Boyer positive earth/ground schematic drawing (this is assuming you are keeping to the original positive earth/ground polarity?).

paul_b said:

-Back to step 12, which wire would be my power feed, I’m only seeing the four whites coming from the ignition that come to the coils?

Click to expand...

White is your power feed. Check your coils, if your wiring is the pre-ballast resistor setup, then the coils will be 2x 12V items? Because the two coils must be wired in series to work with the Boyer system, the sparks from two 12V coils will be weaker than sparks from two 6V coils in series, (or one 12V dual coil). You may need to consider changing to either two 6V coils or a dual 12V coil?
 
 

Thanks LAB I'll give it a look and appeciate your help. Figured that might be the case looking at the pre 71 wiring diagram, but didn't see a rectifier so I was confused!

I have four white wires, should I connect them all as for they all are connected at the ignition?

paul_b said:

I have four white wires, should I connect them all as for they all are connected at the ignition?

Click to expand...

Theoretically, it should only require one white wire between the ignition switch and [Edit] the Boyer box white wire (presumably there is no kill switch?).

The pre '71 wiring diagram shows a white jumper wire from the 1st. to 2nd. coil neg. terminals which should not be connected (as the coils will be wired in series with the Boyer).

Any other white wires could be powering other electrical equipment such as the stop lamp switches etc., so you will need to check if they are still necessary?

CORRECTION

I said a white wire runs from the ignition switch to the 1st. coil negative terminal-which is WRONG! The white wire goes from the ignition switch to the Boyer box (white).