12VDC to 10VDC VOLTAGE STABILIZER


FOR NEGATIVE & POSITIVE EARTH CARS  This is a solid-state voltage stabilizer for classic cars with 12v negative or positive earth. This is a direct replacement for the bimetal spring and contact breaker device that was fitted to classic cars originally.


The cars battery voltage is fed into a voltage stabilizer, which is normally 12v with engine off and about 14v when engine is running. The voltage stabilizer reduces this voltage to a steady 10v for the instrument gauges so they don’t fluctuate with the battery voltage.


The original voltage stabilizer is unreliable and they break down after a while and either over read or allow full system voltage to the gauges, which will burn the gauges out. This alternative is a modern solid-state device which will do the same job but is much more reliable and won’t burn out your gauges.


I have tried and tested this device on my 1972 Triumph Spitfire. This device plugs straight in to the original wiring and works perfectly with a nice steady 10v output. This device will work on other classic cars including Ford, Jaguar, Triumph, MG, Lotus, Daimler, Rolls Royce, Mini Cooper, or any other classic car that has a 12V negative or positive earth electrical system and mechanical gauges. 


The enclosure's measurements are, 36 by 16 by 24mm. The cables are long enough to alter for different cars if necessary. This stabilizer will comfortably provide enough power for 3 gauges, anymore and its recommended another stabilizer is purchased. 


The stabilizer is a plug and play device for most cars, if you have any requests for different connections please contact me.




This item directly replaces your original stabilizer and is very simple to fit. It works better than the original stabilizer because it uses modern components.  I make these stabilizers myself and for your own piece if mind I am a fully qualified electrical engineer. I have sold these stabilizers to many customers on eBay and elsewhere without a single complaint. I am always willing to make bespoke items for people with different requests.


**PLEASE STATE IF YOUR CAR IS NEGATIVE OR POSITIVE EARTH WHEN PURCHASED THE TWO ITEMS ARE NOT COMPATIBLE**


***Also in the interest of the enviroment I prefer to email the instructions, but I need you to provide an email address when purchasing****


Here is some of the feedback I have received


neat unit , with precis and clear instructions


quick sender, great item, imprecive instalation manual. greatly recommend!


thank you for your swift postage-My fuel gauge now works perfectly


good instructions and super fast delivery 5*


All as described, fitted and working. Recommended


Good product,quick delivery,good eBayer


thanks recived today just the job to keep an old car happy


Very quick service - now to fit it!


Quick delivery, item as described, What More Could You Want!


Super fast international delivery!


Quick International Delivery, exactly what I was looking for, a must have item


This sale is for the voltage stabilizer as pictured and a simple guide on how to fit it.


I have not had any complaints or returns, but if you purchase this product and are not happy with it you can return it within 30 days and I will send you another or refund the costs. Please e-mail me I if you have any problems with the stabilizer before sending it back.  


MULTIPLE ITEMS ARE AVAILABLE, E-MAIL IF REQURED