Reply to "MPC Era Diesel Horns"

ADCX RobOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

Tomco posted:
5906, got it. Thanks Rob. What ohms and wattage speaker should I look for? I've read several on this forum. 16ohm, 8ohm, 5 volt, 3 volt. I probably should pull the shell off and see what's on the OEM speaker. Thought??

The speaker is probably fine. You just need a better controller.

Test the speaker by briefly connecting a "D" cell battery in series with the power to the center rail. In one direction, the horn will sound(here is a diagram with a momentary switch in the circuit):

in the other, the bell if it had it:

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