January 11th 2019: Notice of a brief shut-down . .


DRL will be shut for all business, correspondence & calls beginning Thursday 17 Jan until at least Monday 4th February (as a result of ongoing health matters).
We shall endeavour to process & dispatch any orders received by Tuesday 15th January before the closure, subject to stock availability. Sorry for the inconvenience the shut-down causes to our valued customers. Check this page for any updates.

Michael Hutchings, Director


Austin Ruby classic tractor BSA A10 VW Beetle

High performance combined with rugged reliability

Browse our Regulators View our range of Voltage Regulators

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.