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I'm planning to switch from a single horn to dual horns (not air) on my '93 Heritage Classic. I assume I'll need to add this universal relay but have no idea how to wire it. Any thoughts???
I'm planning to switch from a single horn to dual horns (not air) on my '93 Heritage Classic. I assume I'll need to add this universal relay but have no idea how to wire it. Any thoughts???
I've used a relay on single horns with good results, so for duals it should work nicely.
You'll want a designated 12 volt power source to power the horns into the relay. Ground wire from relay to ground. Power from relay to horns and the original horn wire to the relay trigger connection to engage the relay upon pushing the button.
30 - power from breaker
85 - ground
86 - power from horn button
87 - power (out) to horn
87a - not used (but recommend it be insulated - it'll be hot anytime power is on 30, except when power is on 86) Or, you could use a 4 post relay which does not have post 87a
Thanks for the responses and info. With your help I got everything in and functioning properly. Hopefully I can repay your help and effort somewhere down the line.
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Add a relay for dual horns
