horn stopped working

[jcboy]

check if your horns are grounded correctly. you can ground both your horn's negative terminal and pin 86 of the relay through the battery's negative terminal.

relay clicking means current through 85 and 86, also means connectivity of 30 to 87, meaning power to the horns. the question is whether your horns are grounded correctly to use that current.

Relay : What
85 : OEM/original horn wire
86 : ground (together with Horn's Negative wire)
30 : batt +12V
87 : Horn's Positive wire