December 2018, Due to changes in our circumstances:


Non DRL demands on our time have unexpectedly increased, and we have found it necessary to reduce some of our workload. To this end a few of our more specialist products will not be available for the foreseeable future. Our main DVR2/3/4 regulators are not affected. Sorry for any inconvenience. See our News page for more details. Please revisit this page for any related updates to the situation.
Michael Hutchings, Director


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Dynamo Regulators Ltd . .

. . specialises in the design, production & sales of the world's widest range of electronic dynamo voltage regulators. Products include the DVR2 regulator which is primarily for classic motorcycle fitment, and the DVR3 & 4 regulators which suit a broad range of dynamo equipped cars, and incorporates current limit protection.


Dependable regulators to suit most types of classic vehicle dynamos, up to 40 A output. With affordable pricing and rapid dispatch.

Check for suitability . .

DVR regulators

Read through the information on these web pages and data-sheets & order from the pre-eminent Dynamo Regulator experts.

Latest News . .

For the time being the Autolite/JEEP and higher current and custom versions of the DVR3 & 4 regulators are not available


November 2018: We have added instructions via FAQ page for testing the regulation of a DVR2 (for the electrically experienced)


Please Note: DRL is not open for business on Wednesdays. Messages and website orders will be processed promptly on the following Thursday.