Question about Honda CBR 600 F(4)i Motorcycles

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I would like to know the wiring diagram and specs for a regulator rectifier part number sh678c-13

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SOURCE: which post is which on generator on a 1975 sportster?

the post should be the same as an original. The wires should be green and tan. Green wire goes to the post towards the front wheel and the tan to the post nearest the engine. Don't forget to "polarize" the generator before starting. procedure is in the service manual. Momentarily short between the battery positive post and the field terminal.

Posted on Sep 24, 2009

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Battery terminal on regulator rectifier where does it go

Hi, Joseph it goes to the negative side of your main circuit breaker/fuse for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Nov 18, 2016 | Motorcycles

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My plug for that goes to my regulator rectifier fried so now I have to hard wire it. I just don't know what colors go to what. I read the diagram but I have a aftermarket regulator so the colo

How many wires are on the loom to it? And what colours are they.a typical amount is 5
3 yellow or white wires these don't matter which way around they go,the next would be black-and-white and the next goes to the battery and black to if your new reg/rec has 3 the same then connect the 3 yellow/white to them .

Mar 20, 2015 | Goes Motorcycles

1 Answer

Wire diagram for rectifier yamaha vstar1100 classic

Hi, Don sorry you can't find the first and best tool you ever bought for your Yamaha despair not for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Mar 09, 2014 | 2000 Yamaha V Star 1100 Classic

1 Answer

I have a Honda VFR750F Motorcycle. The problem is sometimes it starts and I can use it for a day. the next day I need to jump start it and it will sometimes be ok for a day and whilst I am riding it I...

You are probably dealing with a bad voltage regulator. It is not uncommon for them to overheat and stop working correctly. Usually a visual inspection will show burnt spots. Not knowing what year you have I picked a 1996 vfr750f to show the location of the voltage regulator /rectifier. Part # 13 (around $225) I also found some discussions on wire harness repair that may the involve not having to replace the voltage regulator. There are harness repair kits being made for all years of your cycle. This is a source for aftermarket regulator/rectifiers

Jul 07, 2011 | Honda Hustler S Motorcycles

1 Answer

At idle i have 13 volt across the battery and when i rev it up it goes to 17 vdc and the battery starts bubbling out

The rectifier/regulator unit is possibly faulty or you have lost an earth somewhere.Have a careful look at the wiring around the main electrics and battery area to see if a wire is detached.
Most likely to be the rectifier/regulator assembly.

Jun 18, 2011 | Honda VF 750 S Motorcycles

2 Answers

Battery not charging

run an ohm test on the stator wires, make sure you get readings through all combinations of any 2 wires. if you don't get an ohms reading between 2 wires that means you have a broken stator winding and the stator needs to be replaced. hook up a volt meter to your battery and test battery voltage at rest (bike off), at idle (bike on and idling should be at least 12.5 - 13 volts), and steady around 3 - 4000 rpms (should be around 13-14.5 volts. if it exceeds 15 volts your regulator is bad and needs to be replaced. if all numbers are about what I said, have your battery tested. If your battery is over 1.5 years old it should be replaced anyway.

Jun 03, 2010 | 1986 Honda GL 1200 Aspencade Gold Wing

1 Answer

I have a 1983 BMW R100RT. Potential charging problem

Hi Tom,

Typically, the charging voltage should be somewhere around 13.5VDC-14.5VDC, so you may be experiencing signs of a problem.

Before doing much else, I'd recommend you do two checks:
1) Assuming you are referring to a voltmeter mounted to the bike in your message, double check the voltage using a multimeter at the battery terminals to confirm there isn't a fault with your bike's voltmeter.

2) Because I'm unfamiliar with your particular model, I'd recommend checking the spec for your bike -- if you have a service manual, it should list the proper voltage range. Otherwise, you can probably contact a dealer or BMW tech to get the spec.

If you are below the recommended voltage range, there are a variety of possible faults.

The first that comes to mind is your regulator/rectifier circuit. The purpose of this circuit is to 1) rectify (turn the AC current generated by the engine into DC current) and 2) regulate (make the current stable at a given voltage, say 13.5 VDC, and dissipate the excess voltage as heat). Because this part turns excess electricity into heat, it's not uncommon for regulators to 'burn out."

I believe the diode board you replaced is the rectifier portion of the circuit, so it sounds like the regulator portion may need replacement. FYI, an aftermarket "reg/rec" that combines the regulator and rectifier is available for your bike (see: The advantage to switching to such a unit is that it's probably better engineered than the OEM unit (more efficient/better heat dissipation), and might last longer.

If your battery is more than a few years old, you may want to take it to a dealer or auto parts store to have checked (many will do this for free), and consider replacing it. Often one bad component in the charging system will cause other good components to fail.

Finally, here is a generic fault finding diagram that is very well put together:

Good luck!

Sep 30, 2009 | 1983 BMW R 100 RT

1 Answer

The rectifier fitted has a 6 pin inline plug and socket arrangement. The replacement part I have has a trailing lead with a sixpin plug on the end arranged with two rows of 3 pins. The supplier has...

If it is the correct part then the wires should be the same colours as the ones to the connector
If it is just that the connectors have different layouts then remove each pin & replace in correct positions or just chop the plug & socket off & join respective wires with crimp terminals
As long as it has the correct number of wires going to the right places it should be alright as they all have similar specifications

I hope this helps, if so please mark as helpful.
Positive comments always appreciated

Ride Safe

Sep 18, 2009 | 2003 kawasaki VN 800 Vulcan Classic

1 Answer

Bench start kv 550

Assuming it's a KZ550, first off, your gonna need the battery, ign module, rectifier/regulator, and ign. coils. There should be a wiring harness (5 wires or so) coming from the alt housing (on left crank end) with 2 yellows one pink(to rectifier),red/blk(ign power to cdi) & (light green is neutral light- not needed). Next, assuming there's no points, there should be a 2 or 3 wire harness (usually blue/brown) from ign triggers (on right crank end) these need to go to CDI module. Then make wires from CDI module to coils. Don't forget to ground everything to motor case. Also if it's electric start only, your gonna need the start solonoid ,too. If you want a detailed wiring diagram, let me know what color wires & how many there is on the rectifier/regulator and CDI and the motor and I can email you a diagram.

Jun 03, 2009 | 1986 kawasaki ZL 900 A2 Eliminator

3 Answers

Charging system problem

sounds like the stator may be grounded

May 14, 2009 | 2000 Harley Davidson FLSTC Heritage...

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