A device to boost headlamp voltage (1 Viewer)

May 29, 2021
135
225
Kotka, Finland
Funster No
81,581
MH
Hymer Van
At first I was going to post this in "Electricity. Batteris & Hookup" but as it seems to be a sub-category of "Motorhome Life Support Systems", I'll put this here.

Years ago a store here in Finland sold a device that lifted and stabilized the voltage for H1/4/7 -bulbs, but they don't sell it any more and I don't know the english word to search for those from fx Ebay. If I type in H4 booster, all I get is a set of wires and relays what is not what I am looking for. The system had a separate 'box' which created a steady 14.8 volts in any situation, even the engine turned off and that's what I'm after. And it really was great. With new lamps and a pair of some ++% bulbs and that kit the lights of my old Land Cruiser were fabulous and that's what I'm after again.

So, what might be the word I'm looking for?
 

pappajohn

LIFE MEMBER
Aug 26, 2007
43,454
50,467
Dark side of the moon
Funster No
172
Exp
Since 2005
Voltage stabiliser.
But what you need is an LED conversion or night breaker halogen bulbs ...straight swap and up to 200% brighter.
Loads on eBay and Amazon
 
Dec 2, 2019
3,659
7,907
Amersham
Funster No
67,145
MH
van conversion
Exp
Since 2019
You want a dc to dc converter 12-12v that will boost the 12v nominal even as low as 8v to max 15v
Search for dc dc converter 12v to 12v. Victron do one in this category. Just wire it up on power in, then with a multimeter on output turn the potentiometer clockwise to get your desired 14.8v or whatever is needed. The key word is dc dc converter.
 
Feb 5, 2022
20
43
Exeter, UK
Funster No
86,714
MH
VW Crafter
Exp
Since 2010
Search for "Buck converter", something like this

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Feb 5, 2022
20
43
Exeter, UK
Funster No
86,714
MH
VW Crafter
Exp
Since 2010
Don't like being too pedantic, but a 'buck' converter steps voltage down, and a 'boost' converter steps voltage up. And 'buck-boost' or 'stabiliser' gives a constant output whatever the input is.
You are sir Very right, although I do note that on eBay the terms appear to be interchanged in product descriptions.
 

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