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The mkiv Supra Owners Club

Horn Wiring


Dave F

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Stock wiring should be ok as your aftermarket horns seem to be rated at 10amps

 

But if you still want to fit a relay then

pin85 is orignal horn wire (+)

pin86 earthed on body

pin 30 fused live from battery

pin 87 feed + to horn

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Stock wiring should be ok as your aftermarket horns seem to be rated at 10amps

 

But if you still want to fit a relay then

pin85 is orignal horn wire (+)

pin86 earthed on body

pin 30 fused live from battery

pin 87 feed + to horn

 

Cheers that makes sense, I was confused by the diagram showing the battery live joining the relay earth and nothing going to pin 30.

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