tripping circuit breaker
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Stage II
Joined: May 2022
Posts: 2
Likes: 0
From: salinas
tripping circuit breaker
So I got a 94 heritage soft tail. its my daily rider. one day went to work came home and it was good no problems. the next day I got to start it and batt. is completely dead. i pulled out battery and charged it overnight. The next day i go to hook up batt and as soon as I hook up the last batt terminal the circuit breaker trips right away. ignition switch is in off position... any ideas? switch ,starter, or just a hot wire that grounded?
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,624
Likes: 6,442
From: Honah Lee
Take the battery out and have it checked a good trusted auto parts store. Since your battery was working OK, it's possible it shorted inside.
Start there. Keep it simple first. Then we will go deep
PS. Make your next new post over in the new member area. Just in case..
Welcome from North Beach, FL., USA!
Just in case you have not done this.
Add a Signature Line in your USER set up for your bike year, model, and all the letters that Harley recognizes it with so others see at the bottom of all your post. This enables others to know your exact model if you ever ask a question.
And an Avatar of your favorite shot in the USER set up for the small picture others will see in the top left corner of your post.
Your all set.... Enjoy the ride! ______________
Start there. Keep it simple first. Then we will go deep
PS. Make your next new post over in the new member area. Just in case..
Welcome from North Beach, FL., USA!
Just in case you have not done this.
Add a Signature Line in your USER set up for your bike year, model, and all the letters that Harley recognizes it with so others see at the bottom of all your post. This enables others to know your exact model if you ever ask a question.
And an Avatar of your favorite shot in the USER set up for the small picture others will see in the top left corner of your post.
Your all set.... Enjoy the ride! ______________
Last edited by Jackie Paper; May 12, 2022 at 07:11 AM.
Seasoned HDF Member
Joined: Apr 2008
Posts: 23,053
Likes: 12,327
From: Arkansas
I know about as much about electrical problems as I do women but it sounds to me like possibly the battery hot lead is grounding. Possibly a split in the insulation jumping to the frame?
Seasoned HDF Member
Joined: Apr 2008
Posts: 23,399
Likes: 8,509
From: Spartan Country, Michigan
Welcome from Spartan Country, Michigan!
I tell a lot of new comers to the forum to get: Factory Service manual and the Parts manual. Get a three ring binder and record all your maintenance, repairs, accessories, etc. This will be a great reminder of what was done when. And great material to pass along to the new owner should you sell and upgrade. Also know how large your fuel tank is, a rough idea of your range per tank, and record your fuel usage. I have an app called Simply Auto that I record all my fuel used. I use the odometer and use the fuel gage as reference only. I reset the odometer to zero on fill ups, and I know I can safely get 200 miles on a tank on around town riding, and upwards of 230+ on trips.
Good Luck!!
I tell a lot of new comers to the forum to get: Factory Service manual and the Parts manual. Get a three ring binder and record all your maintenance, repairs, accessories, etc. This will be a great reminder of what was done when. And great material to pass along to the new owner should you sell and upgrade. Also know how large your fuel tank is, a rough idea of your range per tank, and record your fuel usage. I have an app called Simply Auto that I record all my fuel used. I use the odometer and use the fuel gage as reference only. I reset the odometer to zero on fill ups, and I know I can safely get 200 miles on a tank on around town riding, and upwards of 230+ on trips.
Good Luck!!
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,072
Likes: 1,006
wiring schematic is your friend. power source is not all routed through the ign switch.
typically battery cable goes to the starter terminal where it is tapped off to go to the system so there is an issue in wiring.
in electronics we say divide and conquer, so remove tap for system from starter post and the reconnect battery, if all is well then you have a direction you must travel.
before you touch the terminal, look closely to see if there is a short there, aka, cable termination touching the starter case.
if it is the power cable side, replace with welding whip lead, way softer than original and give you some extra length to easy service.
typically battery cable goes to the starter terminal where it is tapped off to go to the system so there is an issue in wiring.
in electronics we say divide and conquer, so remove tap for system from starter post and the reconnect battery, if all is well then you have a direction you must travel.
before you touch the terminal, look closely to see if there is a short there, aka, cable termination touching the starter case.
if it is the power cable side, replace with welding whip lead, way softer than original and give you some extra length to easy service.
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Thread Starter
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Stage II
Joined: May 2022
Posts: 2
Likes: 0
From: salinas
So I got a 94 heritage soft tail. its my daily rider. one day went to work came home and it was good no problems. the next day I got to start it and batt. is completely dead. i pulled out battery and charged it overnight. The next day i go to hook up batt and as soon as I hook up the last batt terminal the circuit breaker trips right away. ignition switch is in off position... any ideas? switch ,starter, or just a hot wire that grounded?
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Seasoned HDF Member
Joined: May 2008
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From: South Carolina
If the main breaker trips as soon as you connect the battery, it is telling you there is a short to ground (a bad battery is not going to cause a circuit breaker to trip).
The short could be anywhere between the main breaker and the three 15Amp breakers, or between the main breaker and the voltage regulator.
You are going to have to pull the seat and fuel tank and look at the wires.
Look at the wire that runs from the main breaker up to the ignition switch (tan wire).
Check the wire that runs from the main breaker to the voltage regulator.
Check the wires that run from the ignition switch to each breaker copper stud.
The short could be anywhere between the main breaker and the three 15Amp breakers, or between the main breaker and the voltage regulator.
You are going to have to pull the seat and fuel tank and look at the wires.
Look at the wire that runs from the main breaker up to the ignition switch (tan wire).
Check the wire that runs from the main breaker to the voltage regulator.
Check the wires that run from the ignition switch to each breaker copper stud.
Last edited by Dan89FLSTC; May 13, 2022 at 07:09 AM.
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