Sachs Suburban 1980 horn funny business

Dan (high idle) Conway /
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hey everyone,

i’ve got a sachs suburban, everything works except the horn. This setup has the zener diode and the horn powered off the ignition lol. Whenever the horn is pressed the ignition is cut. I’ve tried several different horns, wiring has not been tampered with anywhere on the bike.

I tested the diode simply labled “se 30” and one side is around 450k and the other side is over 2 Mega ohms. The horn switch functions as it should, tested with a meter.

Somehow the horn is draining the ignition? Any advice much appreciated, this is just a funny sachs problem.

F242F47F-042A-4601-B058-22EB011DC1DF.jpeg
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