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Superhart · 11-19-2019, 03:29 PM

To clear things up a bit, my car is 12V and so is the horn. It is 12v motor driven. Strangely enough, when I disassembled the horn to inspect, the motor in it is identical to the can type motor used in a couple of my HO Scale model railroad locomotives. Obviously, this horn is an aftermarket repro 12V unit. I have decided to try and measure the current draw when the horn operates and if 1 amp or less I will just go with the push button switch. I did find a 30 amp horn relay with socket on eBay for just a few bucks. I plan to mount the horn in the original Model A position on the headlight bar and use the chrome conduit like original and route the wiring through the firewall to an illuminated momentary switch on the dash.

11-19-2019, 03:29 PM	#11
Superhart Senior Member Join Date: Nov 2019 Location: Hilton head, South Carolina Posts: 118	Re: Is a Horn Relay Necessary? To clear things up a bit, my car is 12V and so is the horn. It is 12v motor driven. Strangely enough, when I disassembled the horn to inspect, the motor in it is identical to the can type motor used in a couple of my HO Scale model railroad locomotives. Obviously, this horn is an aftermarket repro 12V unit. I have decided to try and measure the current draw when the horn operates and if 1 amp or less I will just go with the push button switch. I did find a 30 amp horn relay with socket on eBay for just a few bucks. I plan to mount the horn in the original Model A position on the headlight bar and use the chrome conduit like original and route the wiring through the firewall to an illuminated momentary switch on the dash.