Hello,
currently I am working on my 1965 Jubilee to get it running. The odometer says 1600 miles and I believe that could be correct. I called her "Tequila Sunrise" because of the faded paint on the tank.
This picture was taken in April 2022 at the purchase. The bike sat for about 30 years. The cylinders and heads were removed because of a broken head stud. I replaced the stud an the motor is complete now. Also the exhaust systems are back on the bike.
I want to leave as stock as possible. I also want to keep the 6 volt battery and the wiring harness.
Using Photoshop I coloured a wiring diagram and added the second coil and spark plug in the diagram.
Feel free to use print it out and use it for your projects!
Lights and horn works, but I have no spark.
Measuring the current at the coils I found 0.58 volts,
also at the contact breakers.
I tested the coils which must have been replaced because they are made by Bosch.
They are intact and produce a spark in the test connected directly to the battery.
So I guess there must be a ground problem or broken wires in the old harness.
Will check an report.
Greetings
Uli
You're a braver man than I Ulrich...
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With caution.
Use this diagram with caution. As Ian says converting to Lucas colours is a way to go.
What is wrong with this diagram? Several of the cable colours from the early 60s are no longer available, Transparent for the earth, is defiantly long gone. The RESISTANCE wire is another serious problem, I have seen several attempts to install this from a loom supplier, both dangerous!! In fact I can supply a decent resistor for this BUT you are advised to go 12V and electronic ignition this removes several problems straight away-no need for (dodgy) resistors, worn out advance retard, wandering ignition timing, over heating, vibration. Improved choice of battery, lighting, starting. battery charging. So why the insistence of originality?
PS Nothing wrong with original Wipac coils! Or even Wipac alternators.
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... I'm in the process of converting my Electra to standard Lucas colours as I find the Wipac ones confusing.....