worried about the coil?
I too was concerned about the five minutes of ignition on with no engine running. This is a very good way to ruin a coil.
If you wish to run the pump after shutting down, it would be advisable to figure out a way to do that without providing power to the coil.
On my boat I inserted a toggle switch in the wire from the key switch to the coil. I can turn the engine instruments on without powering up the coil. I did this to allow me to monitor temperature after the engine is shutdown.
You may wish to consider a similar arrangement.
Peter
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