Garden Tractor Forums banner
1 - 8 of 8 Posts

·
Tractorholic
Joined
·
8,457 Posts
Discussion Starter · #1 ·
I keep a few different size self resetting circuit breakers for troubleshooting electrical problems . My son dropped off his 1985 Honda with an intermittent short in the taillight system . It kept blowing the 10 amp fuse while he drove it . I used a pair of jumpers , male ends at one end and female at the other . Put both male ends in place of the fuse and a self resetting circuit breaker on the female ends . I used a inductive amp clamp around the wire and tried moving the different wiring harness around in different places on the bike , found the problem when you had the forks turned just at the right spot it would spike amp meter and sometime trip the breaker . Closer looking the lower fork clamp rubbed the turn signal wire and a little repair and it's done . Even without the inductive amp clamp and meter it's cheaper then replacing fuses as your troubleshooting. Electrical wiring Line Cable Gadget Electronic device
Electrical wiring Audio equipment Composite material Gas Cable
Gas Cable Gadget Electrical wiring Composite material
If you look at the meter it's showing 24.3 mill-volts which with this inductive clamp be 2.43 amps
 

Attachments

·
Registered
Joined
·
1,148 Posts
Good setup. I was shown something similar yrs ago except a turn signal flasher was used in place of the breaker. He used an inductive analog ammeter that didn't have the clamp that he would slide along the suspect wire. When he started from the powered end the needle would deflect one way and when you passed the short the needle would deflect the other way.

Mike
 

·
Tractorholic
Joined
·
8,457 Posts
Discussion Starter · #3 ·
Mike I've see some store bought short finders that I bet work the sane as you described , the problem with the bike it didn't blow the fuse unless the handle bars were just in the right spot . If I have a dead short I'm going to try using a flasher and the inductive clamp and see how it works for me
 

·
Old, but not dead -- yet!
Joined
·
3,424 Posts
Al, what was the amperage rating of the circuit breaker?

If it is lower than the 10A capability of your meter, could you just connect the meter test leads in series with the breaker, and not use the inductive clamp?

If the breaker has an amp rating higher than the capability of your meter, does the inductive clamp prevent damage to the meter?
 

·
Registered
Joined
·
1,148 Posts
Intermittent shorts can be hard to find. In this case just remove the tail lite bulb and lay the flasher on a piece of wood paneling or thin metal such as a tinfoil pie plate to act as a sounding board so you can better hear it clicking when the open circuit closes.

Mike
 

·
Tractorholic
Joined
·
8,457 Posts
Discussion Starter · #6 ·
If the breaker has an amp rating higher than the capability of your meter, does the inductive clamp prevent damage to the meter?
The meter I have has an internal 10 amp fuse but I think it would blow faster then the 10 amp circuit breaker . The inductive clamp I think will read up to 600 amps , the way mine works you set you meter to milli volts and on the inductive clamp has a knob which you use to zero the meter the you and clamp it around the wire , it has a direction arrow on the clamp but it would just show -Neg. volts .
 
  • Like
Reactions: Bruce Dorsi

·
Tractorholic
Joined
·
8,457 Posts
Discussion Starter · #7 ·
I found a 5 amp circuit breaker I'll add that to my test assortment . I thought they didn't make them smaller then 10 amp
 
  • Like
Reactions: Bruce Dorsi
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top