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Wike
10-23-2015, 01:12 PM
74 TR6 after market horn adapter and button....how do I wire this? I know the horn sounds when grounded, but where do I ground this new arrangement to?

TR3driver
10-23-2015, 01:26 PM
Some photos might help. Usually, the ground is through the shaft and steering wheel hub. The hub carries a brush that bears against a slip ring, which doesn't move and is wired to the horn relay.

mrv8q
10-24-2015, 12:28 PM
Had a '74, and used Fiamm(?) aftermarket hi/lo horns. i wired them up as per factory, using the in-place wiring, and they still didn't work. Realized the original horn plunger had lost its contact ground. New horn plunger, and toot toot!