Radio Operation - Eliminating Motor Interference

Hi Mark.
To be honest I'm trying to be prepared for what to do.
The radio has been working on a test bench with a modern electronic vibrator. I have not powered it up in the car yet.
After seeing the three items listed in the installation booklet, I wanted to follow up exactly what they were first.
I am trying to keep it looking original as well as making it functional. Check out my recent articles in the Picture Gallery of the Forums.
I have just basic standard type spark plugs in the engine,

Those were no more than in-line resistors - typically 10,000 to 20,000 Ohms to help suppress voltage transients. If you are using 'modern' resistive or designed-in inductance (spiral wound) spark plug wires they would accomplish the same thing.
Are you trying for something period accurate or are you actually trying to suppress electrical interference you are hearing in your radio (or both)?

Thanks Mark for the detailed description. I guess that covers the Coil and Generator.
What is used for the Distributor Suppressor?
In the diagram below it is connected to the main wire from the Coil.

Auto parts stores in Australia are not as well stocked as those in the US, however I should be able to find the capacitors you listed.
Thanks,
Terry

Hi Terry.
In that era, those noise suppressor capacitors were almost always 0.5 MFD. I have occasionally seen 0.25 and 1.0 MFD ones. The exact value is not critical. With modern parts in would be easier to find 0.47 MFD capacitors. This is a low voltage application but any parts should be tolerant of engine compartment temperatures. You can still get this style of capacitors (bolt-on metal housing) from auto parts distributors.
Mark

In the Cord Radio installation booklet it shows the installation of three items to eliminate the engine interference.
1. Coil condenser.
2. Distributor suppressor.
3. Generator condenser.

Can anybody tell me what are the electrical properties or capacities of these items are, as mine are missing?
I need to install replacements or equivalents.