Dual Ignitron System Thunderbolt IV & MSD6 AL need advice

[monette999]

Dear All,

I would like to implement a Dual Ignitron System Thunderbolt IV & MSD6 AL on my boat. In case my OE System fails I have a backupsystem on
board. for the ignition advance I have purchased a extra Thunderbolt Ignnition amplifier.

I will have one dizzy and one cut out swich. Please let me know if my wiring is OK. My question is if my +12 igntion on the coil is supplying other componments
on the engine.

Sometimes the real wiring is different to the schematic.

I think I need to supply the Hall Switch from the distributor with separate +12V, otherwise I have no trigger signal when I switch to MSD system.
correct?

Here a draft of my schematic diagram,

BR
Bob

 

[alldodge]

Dear All,

I would like to implement a Dual Ignitron System Thunderbolt IV & MSD6 AL on my boat. In case my OE System fails I have a backupsystem on
board. for the ignition advance I have purchased a extra Thunderbolt Ignnition amplifier.

I will have one dizzy and one cut out swich. Please let me know if my wiring is OK. My question is if my +12 igntion on the coil is supplying other componments
on the engine.

Sometimes the real wiring is different to the schematic.

I think I need to supply the Hall Switch from the distributor with separate +12V, otherwise I have no trigger signal when I switch to MSD system.
correct?

Here a draft of my schematic diagram,

BR
Bob

Don't think this will work. Your powering both TB4 and MSD but only plan on using one of them. The amps will be powered and don't know if the signal coming from the distributer will have an issue since it is connected to both amps. There will be an impedance difference and it is unknown if this will have an effect on either. The amp on the TB4 is connected to the negative side of the coil, this same connection is also connected to the tach. Your showing two different connections.



The TB4 is a solid amp, sure some do fail but I would say the same thing about MSD, so why would you want to do this?

 

[monette999]

Dear All, All Dogde,

thank you for your feedback. The MSD is a backup system. If you take a look again you will see the purple cable which is the trigger toggle switch to changeover
on/off the two devices.

+12V goes to the toggle switch.
purple line 1) The +12V goes to the + of the TB4 coil.
purple line 2) The +12V goes to the power trigger of the MSD.

The picture that you have replied is a block diagram to show what I am looking for.

Sorry for the confusion. The schematic is the other unit on the jpg.

So I am not running two powered systems paraelle.

What do you think?

BR
Bob

 

[monette999]

Here my correction.

#
this is what I want to have.