Another question re distributor replacement

[AnkerB-S]

The old distributor is the Lucas electronic ignition that includes an electronic ignition amplifier. I also have an Armtech rev limiter.

I assume, but would like confirmed that I should disconnect the amplifier. Burton is quite adamant that the coil must have a resistance of at least 3 ohm, which I confirmed, but I am not sure what the amplifier does and whether it can burn out the Ignitor.

I would like to retain the rev limiter.

So here's the issue. On the coil there are double male spade connectors on each terminal. Ther's a red wire going to one terminal and a black to the other, which I assume come from the distributor. I can confirm that with an ohmmeter. The trouble is that the other three wires, one going to one terminal and one going to the other, are all white or gray, with two going to one terminal and one going to the other. 

The rev limiter has red and black wires that are supposed to be spliced into the red and black wires going into the distributor, but the splice must be hidden somewhere in the wiring harness. But they could be a pair of the white/gray wires.

I'd hate to have to open the wiring harness and trace all the wires.

 

So here's my plan, which I would like to have critiqued: Connect the red and black wires from the new distributor to the red and black wires that came from the wiring harness to the old distributor. This should ensure that the rev limiter remains active. Then cut all the wires going into the ignition amplifier, which should disable that. Finally retain all wires going to the coil. So what could possibly go wrong?

 

[elie boone]

The original wiring is that a white wire goes to the + or no 30 side of the coil, white/black goes tot he - or no 15 side of the coil, on this - side there will be 2 wires, 1 for the dizzy and 1 for the tacho. with the new distributor there should be a wiring diagram that will tell you what to connect where. BTW didn't the old Lucas amplifier had 3 wires coming out of the dizzy ? i would not cut the old loom but open it to see what you can delete and what u can reuse.

[7 wonders of the world]

Unless your racing in a class that prohibits it then the best thing to replace a distributor with is a 3d mapped ignition with wasted spark, preferably with TB's too....

[AnkerB-S]

Yes, the old Lucas had 3 wires. A red, a green and a black.

[AnkerB-S]

So I am pretty sure I have it figured out now.

The red and black wires going to the distributor are from the rev limiter. They stay.

The wiring diagram in the Weale book shows the functions of the other wires. 

The WB (white and black wire) Goes to the tach and distributor. Of the two white wires one goes to the ignition switch and the other goes to the ignition amplifier, which does the magic of simulating points opening and closing. Which is which would require disconnecting one and using a multimeter.

To wire the new distributor with the Aldon Igniter I connect the red wire to side the ignition switch is wired to (+), and the black wire to the other side of the coil (-). I can leave the wire going to the old ignition amplifier. It simply powers it, but since it was unplugged from the old distributor it doesn't do anything.

The wiring diagram is a bit misleading since it shows two WB wires going to the coil. There's only one. The splice is hidden in the wiring harness.

Thanks for the help and my apologies for being able to answer the question myself.