MG Car Repair: My 76 Midgets Ignition problem...Its killing me!, crane cams, electronic ignition system

Question
There was a lot of loose wires running around under the hood of my 1976 MG Midget, so I decided to tape them up into a harness to tighten things up. The Midget worked perfectly before I did this, but now the coil will not even spark the distributor. I have a Crane Cams XR700 electronic ignition system in it (I bought the car with this already installed so I don't know much about the original equipment.) I looked at the wiring diagram at www.cranecams.com/pdf/90002000a.pdf under the MG section to compare it to my Midget's wiring. It seems the same but I have no idea what the "Lucas Amp Plug" or the "Drive Resistor" are or what they look like. I'm not sure if they are even significant because I cannot find them, and the car ran great before at one point. I tried replacing the coil... it wasn't the problem. Even before I tried that, I tested the coil's connections for voltage and it ran the normal 12 volts. I tried holding the testing light on the positive and negative terminals on the coil to see if it would turn on and off, it only kind of flickered. I'm not sure if I could of shorted out the XR700 because I didn't make any false connections while reconnecting the wires. I am desperate to get my precious Midge back on the road so I can once again enjoy all of the pleasures it has to offer. It frustrates me to have tried all of the things I know possible to fix this problem and to still get the same, dysfunctional results. This is my first car and I am eighteen, so any technical advice on anything will only help me with my understanding of the mechanics of the vehicle. I love this car and all I want to do is be able to drive again.
Thank You,
Matthew

Answer
Hi Matthew,
The "Amp plug" is most likely the "Amplifier plug" (three wire) that connected the wiring to the distributor. If you have an aftermarket ignition system this plug was probably removed. As far as the "drive resistor", it was also used to power the original amplifier and may not have been used on the new system.
I don't know what you did but it sounds like you either shorted out one or more of the wires or you disturbed a poor connection when you taped them together. You need to unwrap the wires and take the diagram of the new system and check to see that each wire makes a proper professional connection to what ever it is suppose to connect to. And check to see that each wire goes to where ever it is suppose to go as per your diagram.
Howard