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88 FXRS electrical issues

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Old 12-09-2018, 10:44 AM
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Default 88 FXRS electrical issues

88 FXRS electrical problem new battery new ignition switch, power to 30 Amp breaker, with key in off position still shows 12 volts to ignition side? nothing works, no start no lights, any suggestions?
 
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Old 12-09-2018, 10:46 AM
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!2v means virtually Nothing... 12.6 to 12.8 is Good...
also... the ground side is at least as important, if not more than, the "hot" side...
 
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Old 12-09-2018, 11:01 AM
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Default 88 fxrs

Originally Posted by Racepres
!2v means virtually Nothing... 12.6 to 12.8 is Good...
also... the ground side is at least as important, if not more than, the "hot" side...

12.74 volts was told the battery was hooked up incorrectly prior to the issue. Battery was replaced by a new one. Should I have 12.74 v at the 15 amp circuit with the key in the off position?
 

Last edited by by lv; 12-09-2018 at 11:04 AM.
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Old 12-09-2018, 11:03 AM
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Ignition switch..like a boat anchor, not worth a crap if not tied on correctly. Pay someone to fix it if you are not experienced. Or get a Harley service manual and electrical diagnostic manual. Unhook battery. Then carefully trace wires and understand it before doing anything else. Some non OEM generic ignition switches are very confusing.
 

Last edited by Jackie Paper; 12-09-2018 at 11:06 AM.
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Old 12-09-2018, 11:10 AM
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Default 88 fxrs

even with all 3 ignition switch wires disconnected theres still 12.74 voltes the the three 15 amp circuit breakers once the battery is connected
 
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Old 12-09-2018, 12:17 PM
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I dunno how your bike is supposed to be wired, but this is how my FLHT is wired:



Which shows the other three breakers (ignition, lights and accessories) being fed off the switch. One 15 amp breaker is fed directly from the 30 amp. Look at the schematic for your bike. It is probably the same.
 

Last edited by Dr.Hess; 12-09-2018 at 12:18 PM.
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Old 12-09-2018, 02:00 PM
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From an online source, this should be the stock wiring diagram for an '88 FXRS.

The large black cable from the + battery terminal should go to the long post of the solenoid.

The red wire from the + battery post should go to the input (usually copper post) of the main circuit breaker. From the output of the main breaker, a wire goes to the voltage regulator. Another wire goes to the "B" terminal of the ignition switch.

The only time any of the other circuit breakers should have power to them is if the ignition switch is turned to the "On" position


 

Last edited by yellowstone kelly; 12-09-2018 at 02:06 PM.
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Old 12-09-2018, 02:04 PM
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Originally Posted by by lv
88 FXRS electrical problem new battery new ignition switch, power to 30 Amp breaker, with key in off position still shows 12 volts to ignition side? nothing works, no start no lights, any suggestions?
there's a good dude in town..Kenny at Boulder Choppers. He's the go to FXR guy out here.
 
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Old 12-09-2018, 02:09 PM
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With pwr to the ign sw , and turn it to on, is there pwr there? (on that side)
 
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Old 12-10-2018, 09:16 AM
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Default 88 txrs

Yes the is power to the 15 amp breakers with the key on
 


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