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Discussion Starter · #1 · (Edited)
I have taken out the stock (read "wimpy") horn out of my '88 Sammy. I have a horn from an older Chevy to replace it. My problem is that the Sammy horn has 2 wires leading to it, one blue & green and one white. The Chevy horn only had one wire attached to it. How do I make this work?
 

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i'm betting one is a ground and a positive........ the chevy one probually grounds to a metal surface...just gotta experiment to find out i guess....
 

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Sammy ones work by supplying power to the horn and then grounding the horn thru the steering wheel so a relay is needed to make single terminal horns work. Pick up a Bosch relay and install it.
 
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