Comments on: Charging System ’90 Ultra

By: Customer Service

Customer Service — Fri, 11 Dec 2020 17:01:56 +0000

Hello David,

Thank you for contacting us. Here is the experts reply:

Make sure that you test the stator’s AC output.
You should have approximately 20 volts AC per 1,000 RPM.
If the stator passes this test, we would suggest replacing the regulator.

CHARGING SYSTEM
https://www.fixmyhog.com/video/charging-system-diagnosis-002187/

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Wrench Safe.

Mark
Fix My Hog

By: DAVID ELI GONZALEZ

DAVID ELI GONZALEZ — Thu, 10 Dec 2020 02:22:49 +0000

Hi I am working on a 2002 Electra Gilde with a two phase stator, my client originally had changed the regulator rectifier, I tested the generator/ stator and if showed continuity across the two wires and no continuity to the grounds where it was tested, I had to solder the stator wires to a new socket harness and installed a new regulator rectifier, I also changed the 40 amp circuit breaker and the charging system collapses when the bike reaches a certain temperature, I have tried several tests shown in the videos, but this bike simply won’t rectify and charge the battery, the battery gauge is moving from 12volts and dropping to 8 volts like if the rectifier was dead I desperate and do not know what to do could you please advise on this please FMH Team Inreally need your help!!!! David from Mexico

By: Brian

Brian — Fri, 04 Jan 2019 10:01:26 +0000

In reply to Brian.

When I first purchased the Shovel she was running spot on!

One day went out to fire her up….just slow rolled over once…..?

Pull the seat off and start climbing around and found some VERY
questionable backyard hack “repairs”…..bad repair work, lousy wire routing!!….just stupid stuff! Pulled the battery and got to work.

Rerouted a bunch of wiring, the main harness connector was cracked as someone did not move it to the side before mashing the seat back on! Just stupid, shoddy workmanship!

Took my time, cut & replaced a few connectors and shrink wrapped
them all! Crimped the connections….NOT soldered!

The average weekend warrior can’t solder to save his life!

And…..since my Shovelhead is 1979 vintage….it’s the last year the drivetrain is SOLID mounted!

That’s right…NO rubber motor mounts So preflight checks are a MUST for this ol’ girl…not rocket science….ya get in to a routine and only takes 5-10 minutes every couple of runs.

Used heat-shrink butt connectors at all splices and heat shrink
wrapped all “eye” connectors also followed by heat-shrink wrap
EVERYTHING!

ALL these connectors are available at Home Depot!

By: Brian

Brian — Fri, 04 Jan 2019 09:39:08 +0000

I had ' 01 FLHTCI with a a Frankenstein trike conversion kit....my FrankenGlide was stolen.....not the issue. This was my first fuel injected bike.....ya it had the Magnetti Marelli module and after a through cleaning it performed flawless! NEVER an issue! So he MM haters just go suck it.... Man was I supprised just how MUCH the fuel injection system just sucks power from the electrical system!!! IF there is a weak link in the chain it will surely leave you stranded on the side of the road eventually! I would recommend upgrading the electrical system on ANY fuelie bike! Not an issue for me now as I'm riding a '79 FLH 1200 King of the Highway! She still has the OEM charging system and works perfect! Keep up the good work here fellas..... HAPPY NEW YEAR! Shovel on... ..

By: Jim

Jim — Wed, 01 Aug 2018 13:53:31 +0000

In reply to Customer Service. Thanks I will do a full charging test I will check with the shop to see if they replace the rotor also I will try to post what I find out

By: Customer Service

Customer Service — Thu, 26 Jul 2018 13:12:29 +0000

In reply to Jim.

Dear Jim,

Thank you for your patience. In regards to your question-

Definitely need to start by performing a full charging system test.
Your stator should have been replaced with a new rotor.
https://www.fixmyhog.com/video/charging-system-diagnosis-002187/

I hope this helps!

Sincerely,

Mark
Fix My Hog Video Membership

By: Jim

Jim — Sun, 22 Jul 2018 01:41:06 +0000

Ticket 17675 i have a 2009 ultra that at start up shows 14 volts but after 10 minutes of riding when i come to a stop the volts will drop to around 12 volts if i take
hi i have a 2009 ultra with a charging problem at start up i have 14 volts but after riding 10 mintes i apply the brake at a stop sign and my volts drop to around 12 volts if i release the brake my volts slowly return to 14 volts at idle battery has a full charge not sure where to start just had new stator and reg installed ????

By: Customer Service

Customer Service — Fri, 08 Jul 2016 18:37:06 +0000

In reply to johnny2012.

Hi Johnny. The theory is the same. One more wire does not really change anything.
When testing AC output test across any 2 (or combination of 2) wires.
You should have 20 volts AC per 1k RPM.
Same with testing stator ohms resistance. Test across two wires to see if resistance is within spec. Also use your meter to test each wire for continuity to ground.
If lucky, you will only need to replace your regular.
https://www.fixmyhog.com/video/charging-system-diagnosis-002187/

By: johnny2012

johnny2012 — Mon, 04 Jul 2016 22:35:46 +0000

hello guys I have a 2012 flstn delux I am having charging issues battery is charge to 13.5 dc. crank motor over & runs dc volts drop to 12.5 dc at idle and it never climbs dc volts on meter . I bought the electric c/d from fix my hog it talks about a two wire charging system but I was looking at my connector it has 3-wire going into crank case. can I do the same test with a 3=wire test as i seen on c/d for a 3-wire if not can you help me out on this by giving me info on how two test if we have a back feed on voltage regulator. thanks for any info that you can help me with charging system.

By: Customer Service

Customer Service — Mon, 06 Jun 2016 18:53:09 +0000

In reply to James.

Hi, James. Need to do a full charging system test. https://www.fixmyhog.com/video/charging-system-diagnosis-002187/