VRRUpgrade - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
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post #1 of 9 Old 09-05-2014, 07:51 PM Thread Starter
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VRRUpgrade

I just installed one of these VRR Mosfet Voltage Regulator Rectifier Suzuki Marauder VZ 800 2005 2006
image
Mosfet Voltage Regulator Rectifier Suzuki Marauder ...
US $29.89 New in eBay Motors, Parts & Accessories, Motorcycle Parts
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It's bigger than the stock Gen1 VRR but fitting to the original top bolt and making a new lower hole allows the fins to rest against the frame cross tube.

It is advertised as MOSFET and the price was good, especially shipped to my friend in the 'States.

It was not stated whether it is shunt or series regulation but thought I couldn't go wrong for the price, even if was a shunt unit. Testing shows that (assuming it really is a MOSFET, it produces a higher charging voltage under load at idle. Checking stator lead current indicates a uniform AC current regardless of load so it is a shunt unit and not series. Too bad but it seems that there are MOSFETs and that they are used for rectification which explains the almost 1 volt higher at idle.

Modification #87 ;-)

Wiring was simple as just extracted the stator spade lug connectors from the original plug and fitted them to the three wire plug body supplied. Plugs into the VRR.

They had shipped a duplicate plug body to the one on the VRR so could not use that to connect to the bike's harness. I didn't mind this much as am not a fan of the minature connector size used for output and ground on the Suzuki wiring. The VRR has two red output wires and two black ground wires. I simply snipped the small connector off the wires and connected a 1/4" eye connector to one black which went to the 6 mm bolt holding the cable clip to the left front of the VRR.

The second black ground wire was fitted with an insulated male spade connector which plugged into the (extracted) black/white ground wire from the VRR plug. This connected to both the common ground harness and chassis. Better.

The two red output (positive) wires from the VRR were connected to one male and one female 1/4" spade lug connectors. These were plugged into the original harness white wire and to the additional heavier white wire which runs to the battery cable side of the starter relay (solenoid).
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post #2 of 9 Old 09-06-2014, 08:39 PM Thread Starter
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Confirmed that the voltage now sits at 14 volts+ at 1500 RPM idle with lights on. Used to be around 13.
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post #3 of 9 Old 09-08-2014, 09:07 PM
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Pics or it didn't happen.
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post #4 of 9 Old 09-09-2014, 10:01 AM
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Quote:
Originally Posted by Normk View Post

It is advertised as MOSFET and the price was good, especially shipped to my friend in the 'States.

It was not stated whether it is shunt or series regulation but thought I couldn't go wrong for the price, even if was a shunt unit.
If it's a Shindegen regulator (most likely), the first two characters in the part number identify it as a shunt or mosfet. The mosfet begins with FH, the shunt with SH.

I put a FH012 in my 2013 at 1285 miles. Now I'm at 24,000 and it's still working perfectly. I used the Triumph harness to make life easier.

Ron

Opinions are my own. Everything I describe is very likely wrong. Use at your own risk.
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post #5 of 9 Old 09-10-2014, 07:04 PM
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Thanks for the photo. I am new to all things motorcycle and am trying to glean as much info as possible. Reading about a way to boost volts sounds like a good thing for safety but I don't/didn't know what a VRRU was so seeing a picture helps me remember these thing for future upgrades.
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post #6 of 9 Old 09-10-2014, 07:49 PM Thread Starter
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If you would like additional information or to have it presented in a different way, please ask. Thank-you also for your explanation regarding the reason for which the photo was desired as it had not occurred to me. One of the most difficult things for any of us is to imagine what it is like to not know something which we know. I grew up in family vehicle repair business so do not have the usual experience in learning many things formally.

Tom, Mike & I are just finishing a wiring identification project which may be of interest to you. We have cross referenced a wiring harness off a bike, to wiring on the bike, and wiring diagram The intention is that one might be more able to select a component such as the VRR (voltage regulator/rectifier), find it on the bike, locate it on the wiring diagram and relate its connected wiring to where the wiring connects to the other components involved.

I've tried to describe the location of the safety circuit diodes, for example, to help some one in diagnosing a problem. If one doesn't know for what they are looking, or even the size and shape of the component, and if location descriptions are not well described, finding the diodes can be "interesting". No one needs that in the middle of trying to sort out an unfamiliar problem.

Hoping to get the information posted in the next few days so please consider looking it over and suggesting what might improve the utility.
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post #7 of 9 Old 09-10-2014, 07:51 PM
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I have been watching the wiring thread. I may not post much but I read a lot and check in almost daily.
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post #8 of 9 Old 09-10-2014, 07:56 PM Thread Starter
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I have written various circuit and other systems descriptions in an effort to explain how some of the systems work. If any of that might be of interest/use, I'd be pleased to post them again or send them directly by email.

People are generally very helpful in sharing their expertise so whether it's paying ahead or repaying, it's all to the good.
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post #9 of 9 Old 09-12-2014, 03:15 PM Thread Starter
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Can't recall if I mentioned but the supplier "Mister Electrical" of the EBay VRR responded brilliantly to a problem/omission so wanted to give credit.

The VRR received was supplied with the OEM Suzuki plugs on the VRR + the mates for the wiring harness end as advertised. I like this because the plugs and/or terminals are sometimes heated or corroded.

Problem was that the 4-wire plugs were both for the VRR end rather than having the extra/separate one for the harness which was able to plug into the VRR. An oversight somewhere but they immediately responded to ask whether I would prefer to receive the correct plug or another solution.

A good supplier sends the item, but a great supplier resolves problems when they occur, as they eventually will.

Hat's off to them, FWIW.
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