|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
09-02-2020, 03:36 PM | #1 |
Member
Join Date: Jan 2014
Location: Cranberry Twp., PA
Posts: 31
|
Checking the Horn Circcuit
I'm trying to test the main wiring harness which I just installed before completing the installation of headlights, tail lights, horn, etc. Everything makes sense to me except the wiring to the horn. Using a test light, one of the two wires is "hot" all the time, one is not. Pushing the horn button makes no difference in either wire. I was expecting to see a difference when the button was pushed. I have a different light switch rod but don't want to go thru the hassle of changing rods and I'd like to know if things are okay before proceeding. Are things okay or do I have a problem?
|
09-02-2020, 05:39 PM | #2 |
Senior Member
Join Date: May 2010
Location: Young Harris, GA
Posts: 1,836
|
Re: Checking the Horn Circcuit
The solid yellow wire that goes into the horn is not switched by the horn button at the top of the light switch rod. It is "hot" all the time.
The wire that has a tracer that connects to the horn goes up to the horn button, and the horn button provides the GROUND for the horn. Then it turns the motor and makes the sound. Find a wiring diagram and study it. You are wise to check things out in advance. I use a ohmmeter without connecting the battery. You have too many "amps" available inside that battery to use it for testing (unless you have added a fuse). .
__________________
Jim Cannon Former MAFCA Technical Director "Have a Model A day!" |
Sponsored Links (Register now to hide all advertisements) |
|
09-02-2020, 05:48 PM | #3 |
Member
Join Date: Aug 2017
Location: Williston, Florida
Posts: 82
|
Re: Checking the Horn Circcuit
Good luck Jim you have my vote!
|
09-02-2020, 06:07 PM | #4 |
Member
Join Date: Jan 2014
Location: Cranberry Twp., PA
Posts: 31
|
Re: Checking the Horn Circcuit
Thanks Jim. That makes sense to me and thankfully I think I'm okay to proceed. Seems there's no easy way to test with a test light. I'll try an ohm meter.
|
09-03-2020, 10:12 AM | #5 | |
Senior Member
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,085
|
Re: Checking the Horn Circcuit
Quote:
__________________
If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn! |
|
09-03-2020, 11:14 AM | #6 |
Senior Member
Join Date: Jun 2017
Location: Walla Walla, WA
Posts: 1,047
|
Re: Checking the Horn Circcuit
|
09-03-2020, 01:44 PM | #7 |
Member
Join Date: Jan 2014
Location: Cranberry Twp., PA
Posts: 31
|
Re: Checking the Horn Circcuit
Thanks fellows. I thought of that myself after the brain fog left. Did that yesterday and I'm in good shape. Ready to finish the job. Thanks to all!
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|