LED Headlight = One happy Commando

Stillreel · Jun 9, 2018

I installed one of these today; $10 and all I had to do was invert the +-. Much MUCH better performance while driving with the headlight on. The only draw back is that I only have HIGH BEAM for now.

https://www.amazon.ca/dp/B01N2XYV4T/ref=pe_3034960_236394800_TE_dp_1

But what a great modification!

pommie john · Jun 10, 2018

Most of the LED headlight bulbs I've seen have a cooling fan on the. Does this one not need one?

Will you be able to reverse the polarity on both beams?

Beach · Jun 10, 2018

pommie john said:
Most of the LED headlight bulbs I've seen have a cooling fan on the. Does this one not need one?

Will you be able to reverse the polarity on both beams?

There is no way to reverse polarity, having tried this myself, the best you can do is 1 beam. There are several on Ebay that are not polarity sensitive and will work on both beams. Will try to find them and post a link.

kommando · Jun 10, 2018

pommie john said:
Most of the LED headlight bulbs I've seen have a cooling fan on the. Does this one not need one?

Will you be able to reverse the polarity on both beams?

There are 4A rectifiers on eBay, any orientation in and marked +ve -ve out, for 2 filiment bulb you need 2, will post a link when off the mobile.

here it is

https://www.ebay.co.uk/itm/141737400518?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649

This DC DC Voltage polarity exchange circuit can auto supply correct +ve and -ve voltage when the batteries are connected in any orientation.
It will automatically switch to +ve and -ve.
It is good to protect charging or other modules. In charging modules, where reverse polarity will damage it, this PCB can 100% sure to supply correct polarity -ve/+ve. No need to care the batteries are connected wrongly.

RAWellman · Jun 10, 2018

I bought an LED dual beam headlight, of course + ground, from Classic British Spares in California. I'm very pleased with it's performance, fits without modification into the original OEM Lucas socket without any need for a cooling fan. It does have what appears to be an aluminum heat sink. Also have fitted my '74 Commando Roadster with LED turn and combination Tail/Brake light, also pleased with them. A bit pricey but don't own any Vintage Brit Bike if you can't deal with that.

Onder · Jun 10, 2018

Absolutely!

"A bit pricey but don't own any Vintage Brit Bike if you can't deal with that."

Stillreel · Jun 11, 2018

FYI: The voltage change using the traditional Tungsten bulb dropped from 12.4 to 11.3V when switched on. The LED resulted in 12.4 to 12.3V. And again, the bulb bought on Amazon was $10 including shipping.

Nater_Potater · Jun 12, 2018

https://www.aliexpress.com/item/AC1...321b-4ce9-827f-ab35be0e7279&priceBeautifyAB=0
Works either positive or negative earth (listed as "AC 8V ~ 80V). This guy runs two COBs for Low beam, adding a third for High beam. Very similar to the unit I run on my '74. Be mindful that the one major drawback is that you have to source a reflector that will accept an H4 bulb. Other than that, plug and play!

Nathan

vidar hjelm johansen · Jun 13, 2018

Hi
I've tried such a thing. I did not like it.
That because high and low were not high and low but more or less
vidar

Peter R · Jun 14, 2018

I use this one, a bit pricey, but works perfect, as Vidar says, many LED lights do not have the correct high-low beam, but this one is correct.
http://www.norbsa02.freeuk.com/goffyWhyNotLEDs.htm

auldblue · Jun 14, 2018

I've got three different styles, the best is the new one from classic Dynamo repairs.

Tornado · Jun 14, 2018

Anyway to get these led H4 type fittings to work in my British Pre Focus BPF type reflector? I have just ordered an LED hi/lo BPF bulb from Dynamo in UK...but this is just the bulb, no voltage regulator or cooling fins, etc, so likely not nearly as high output as above.