Re: Steering wheel horn switch veiw

Posted by HH56 On 2018/1/9 15:14:27

Yes, you can test the horns as you described. If the car is wired per original as long as the battery is connected it should not even need the key on.

The horn relay needs a ground to energize and has 3 terminals labeled B for battery, H for horns and S for switch (the wire in steering wheel). The terminal location on the relay could be different depending on the brand. The letters may be very faint and if the B and H marking is not clear the wires can be accidentally reversed. No damage will happen but obviously the horns will not work. The battery wire is usually the thickest and comes from the same solenoid terminal the battery connects to.

As an added issue there are ordinary power relays of that period which look identical to horn relays. They are labeled differently and need a voltage to energize. If one of those gets installed for the horns it causes all kinds of confusion.