1988 FXSTC Problems
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
It pretty well has to be between the 30 amp circuit breaker and the ignition switch. Or between the ignition switch and the fuses. Otherwise it would be blowing fuses instead of the breaker. I would guess you have a short somewhere in the wiring from the breaker to the fuses, or in the ignition swtich itself.
Seasoned HDF Member
Joined: May 2008
Posts: 21,174
Likes: 12,745
From: South Carolina
There are no fuses on this bike.
The power goes from the battery to the main breaker, and from there it goes to the ignition switch.
The wires from the switch feed three 15 amp breakers:
Accessory
Lighting
Ignition
As is clearly shown on the wiring diagram, the coil is on the ignition 15 amp breaker.
If the coil was causing a breaker to trip, it would be the 15 amp ignition breaker.
This is a simple direct current circuit. And finding the fault is done by simple basic troubleshooting.
You have said several times that all electrical shut off, and didn`t come back on until you heard the breaker reset.
If that is what is actually happening, then you are chasing your tail by buying parts before you perform some basic electrical troubleshooting.
The power goes from the battery to the main breaker, and from there it goes to the ignition switch.
The wires from the switch feed three 15 amp breakers:
Accessory
Lighting
Ignition
As is clearly shown on the wiring diagram, the coil is on the ignition 15 amp breaker.
If the coil was causing a breaker to trip, it would be the 15 amp ignition breaker.
This is a simple direct current circuit. And finding the fault is done by simple basic troubleshooting.
You have said several times that all electrical shut off, and didn`t come back on until you heard the breaker reset.
If that is what is actually happening, then you are chasing your tail by buying parts before you perform some basic electrical troubleshooting.
Last edited by Dan89FLSTC; Mar 6, 2014 at 07:55 PM.
Thread Starter
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Intermediate
Joined: Oct 2012
Posts: 40
Likes: 0
From: Dallas, Texas
@Dan,
Do you have an idea of why the bike ran well when it was cold outside vs when it was hot? I feel if it were some kind of wire shorting and grounding out it would happen regardless of temperature. Just an observation, what do you think?
Do you have an idea of why the bike ran well when it was cold outside vs when it was hot? I feel if it were some kind of wire shorting and grounding out it would happen regardless of temperature. Just an observation, what do you think?
Ultimate HDF Member
Joined: Jul 2007
Posts: 5,716
Likes: 103
From:
Mine was not tripping any breaker, just died once it warmed up. Would let it sit a few minutes and cool down and it would fire right back up and run good until it got hot again.
Thread Starter
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Intermediate
Joined: Oct 2012
Posts: 40
Likes: 0
From: Dallas, Texas
Long story short, Crane Cams dual coil came into had it bolted on and was connecting the wires to the two post and one of the post sheared completely off so in a frantic/pissed moment called local are shops to see if they had any coils. HD had a stock coil so I ran up there bought for 55 vs the 120 I paid for the Crane coil. Slapped it on the bike, rode the same ride I've been saying (highway at 70 mph for about 30 mins) got back to the house with no problems. The temp outside was fairly hot, 80 degrees and the oil temp got to about 185 on the dipstick thermometer. You would think if it was something other than the coil it would have happened again today but after replacing the coil and it running well, I would hope that I have solved the problem. Trust me though, if I haven't I will post again haha. Thanks for all the help guys!
Ultimate HDF Member
Joined: Jul 2007
Posts: 5,716
Likes: 103
From:
Long story short, Crane Cams dual coil came into had it bolted on and was connecting the wires to the two post and one of the post sheared completely off so in a frantic/pissed moment called local are shops to see if they had any coils. HD had a stock coil so I ran up there bought for 55 vs the 120 I paid for the Crane coil. Slapped it on the bike, rode the same ride I've been saying (highway at 70 mph for about 30 mins) got back to the house with no problems. The temp outside was fairly hot, 80 degrees and the oil temp got to about 185 on the dipstick thermometer. You would think if it was something other than the coil it would have happened again today but after replacing the coil and it running well, I would hope that I have solved the problem. Trust me though, if I haven't I will post again haha. Thanks for all the help guys!
Hope that takes care of it.
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Thread Starter
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Intermediate
Joined: Oct 2012
Posts: 40
Likes: 0
From: Dallas, Texas