circuit protection?

2002john · Post by **2002john** » Mon Oct 29, 2007 12:38 am

Should I fuse coil ,edis module and mjljr, what is the configuration

sunray · Post by **sunray** » Mon Oct 29, 2007 1:59 am

Yes, you can run them on a common power that is ignition switched. Just put an inline ato fuse holder with a 7.5A fuse.

MartinM · Post by **MartinM** » Mon Oct 29, 2007 9:07 am

I'd do:
-3A inline to the MJLJ
-15A inline to coil/EDIS

That way if the MJLJ goes u/s (highly unlikely) then you've still got EDIS limp home mode. With a single fuse, you would lose the lot.

7.5A is a bit low IMHO - coil primary currents can be of that order (but they're very transient, so shouldn't the fuse in normal operation). If something in the coil/EDIS is going to go wrong and blow a fuse, it will blow either a 7.5A or a 15A, so might as well keep away from the normal operating current.

Martin