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Bendix Mag Harness Cap

plbarrett2004

Active Member
Hello All,

I have a Bendix S4LN-21, 10-51360-37. Its an impulse coupled mag. Unfortunately, since I'm cobbling parts together the mag didn't come with a harness cap or harness. I bought harness leads from Aircraft Spruce, and I was able to source a used harness cap. Which brings us to present. I'm about to time the magneto to the engine, and install the ignition leads to the harness - but before I do, I need to know which cylinder goes to which output on the cap.

I have the S-20 overhaul manual - but if the info is in there - I've missed it.

This is the best I've come up with - but I don't have strong confidence that I've got it correct. The harness cap is marked with a small number 1 by the bottom left outlet. Based off the rotation of the gear, I think what I have in the photo is correct. Can anyone verify that I've got it correct - or incorrect - or is there a better way to figure this out?

Thanks!
Peter
 

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