Home of the Pardue Brothers Headlight Voltage Regulator

for the 6 Volt Honda CT110

To download the PDF installation instructions click here.

To purchase in the USA or Canada click the Add to Cart button below.

Cost is $29.95 USD plus USPS Flat Rate Shipping ($5.85 USD to USA addresses)
Florida Residents, 7% Sales Tax will be Added

We ship via USPS Flat Rate to Canada (USD $19.95 to Canadian Addresses)
you must include your phone number for the Customs form 2976

We ship via USPS Flat Rate to Australia (USD $23.95 to Australian Addresses)
you must include your phone number for the Customs form 2976

If you live anywhere else in the world and want our products, please email us first to arrange shipping

** Shipping for up to 6 regulators is automatically combined to save you $$ **


How does it work?

The regulator prevents excessive AC Volts from blowing headlight bulbs.

Installation is simple, all wires are color matched and plug right in.

No wiring modifications are required.

The regulator was designed and is manufactured

in the United States of America by the Pardue Brothers.

Direct all questions to us via email

The story on how this product came to be:
The CT110 has a unique electrical system, for sure.
Mel on the CT90 Yahoo group introduced me to it some years ago, and after several tries I designed a special Voltage regulator
that does not hinder low speed headlight Voltage - which can be marginal at times - but it does
save the filament automatically as engine speed increases, burning off the excess Voltage as heat.
In early 2012 we started manufacturing and shipping the special Voltage regulator just for the 6 Volt CT110 headlight overVolt problem,
giving it part number 6VACRMB.

On all CT110 models, the headlight and high beam indicator lamp are powered by AC, directly from a stator winding.
On all CT110 models, the ignition is powered by a separate winding in the stator.

The first two year models have points and condenser ignition powered by AC.
Somewhere in the '83 production run Honda installed CDI ignition, also powered by AC from a separate stator winding.
The dash and neutral lamps, blinkers and indicator, stop/tail lamp, and horn are all powered by switched, fused power from the battery.
A single winding from the stator charges the battery through a half-wave rectifier.

Just for contrast, everything on a CT90 is powered by the battery,
and the charging system involves a more complex rectifier and stator coil switching arrangement.

The CT110 is simpler.... however...

Quite often at some point in the life of the bike, the AC headlight Voltage goes way up.
This problem seems to be located in the stator itself, manifesting as too-high headlight Voltage just above idle.
The bike will blow headlight bulb filaments quickly.
Changing the stator is not only costly, but the overVolt problem typically re-occurs.
I designed and developed a special Voltage regulator for the CT110 headlight overVolt problem.
Mel figured out it would fit in the headlight bucket, and the Pardue Brothers manufacture and stock it under part number 6VACRMB.
The device is solidly built in a weatherproof housing, with Honda plug-in connectors and color-coded wiring for a simple and quick fix.