Ignition Wiring
Discussion
One supply (switched ignition feed to the coil) if you have the usual unballasted coil.
Ballasted coils used to be used before electronic ignition became common. If you had one of these you'd need to provide a second feed to bypass the ballast resister while cranking. These aren't at all common these days and if you have electronic ignition it's probably safe to assume you have an unballasted system.
Ballasted coils used to be used before electronic ignition became common. If you had one of these you'd need to provide a second feed to bypass the ballast resister while cranking. These aren't at all common these days and if you have electronic ignition it's probably safe to assume you have an unballasted system.
I've got a ballast resitor and its wired up to the diagam. What I cannot sort out is where the igntion feed from the resitor should go on the ignition barrel. I've also been told that I can take a feed off the cold start tetminal on the starter to the coil via the ballast restistor. Either way I am now confused!!
You seem to be implying that you have a ballasted ignition system. You need to make sure. The ignition module and coil need to be the right spec for a ballasted system and you need to have the correct ballast resister for them. If you aren't absolutely certain, ask the people who supplied it.
If you do have a ballasted ignition system then you need to provide two feeds to it.
The first feed is connected to a terminal on the ignition barrel which is live when the ignition is on. The is connected to the ballast resister and the other side of the ballast resister is connected to the coil +ve. When you earth the coil -ve you should see around 6V at the coil +ve terminal from this feed.
The second feed comes from a terminal on the ignition barrel which is live when the starter is cranking. Alternatively you can take it from the starter motor itself. This is connected directly to the coil +ve terminal i.e. bypassing the ballast resister. This will supply around 9V to the coil while the engine is cranking.
If you do have a ballasted ignition system then you need to provide two feeds to it.
The first feed is connected to a terminal on the ignition barrel which is live when the ignition is on. The is connected to the ballast resister and the other side of the ballast resister is connected to the coil +ve. When you earth the coil -ve you should see around 6V at the coil +ve terminal from this feed.
The second feed comes from a terminal on the ignition barrel which is live when the starter is cranking. Alternatively you can take it from the starter motor itself. This is connected directly to the coil +ve terminal i.e. bypassing the ballast resister. This will supply around 9V to the coil while the engine is cranking.
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The first feed is connected to a terminal on the ignition barrel which is live when the ignition is on. The is connected to the ballast resister and the other side of the ballast resister is connected to the coil +ve. When you earth the coil -ve you should see around 6V at the coil +ve terminal from this feed.
The second feed comes from a terminal on the ignition barrel which is live when the starter is cranking. Alternatively you can take it from the starter motor itself. This is connected directly to the coil +ve terminal i.e. bypassing the ballast resister. This will supply around 9V to the coil while the engine is cranking.
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The feed from the starter - is that from the cold start terminal which is unused?
The first feed is connected to a terminal on the ignition barrel which is live when the ignition is on. The is connected to the ballast resister and the other side of the ballast resister is connected to the coil +ve. When you earth the coil -ve you should see around 6V at the coil +ve terminal from this feed.
The second feed comes from a terminal on the ignition barrel which is live when the starter is cranking. Alternatively you can take it from the starter motor itself. This is connected directly to the coil +ve terminal i.e. bypassing the ballast resister. This will supply around 9V to the coil while the engine is cranking.
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The feed from the starter - is that from the cold start terminal which is unused?
GV said:
The feed from the starter - is that from the cold start terminal which is unused?
I have no idea what 'cold start feed' means in the context of a starter motor. I don't see how the starter knows or cares whether it's hot or cold. Just connect it to something that is live while the starter is cranking. How you get it is up to you to decide. There's a suitable terminal on the ignition barrel, there should be one on the starter too.Gassing Station | Wedges | Top of Page | What's New | My Stuff