Additional rectifier to use an LED headlight? 1988 Jog

[88jog]

My Jog has burnt out high beams, resulting from a failed voltage regulator.  I have replaced the regulator/rectifier, but I still have to deal with trying to find a replacement sealed beam headlight for a 30 year old scooter. 


Even when working the headlight kind of sucks.  And considering a new headlight is expensive, I can get a new LED headlight assembly and rectifier for less than a Yamaha unit.  Problem is, LED's are DC, and the headlight on a Jog runs on regulated AC direct from the regulator/rectifier.

Two questions.

Can I run a second stand alone rectifier right at the headlight to convert to DC?

Also, what sort of wattage headlight can I run without stressing the charging system?

I know it's possible to convert the entire system to DC, but I'd rather not do all that rewiring if I can just add a small box in the headlight fairing.


The objective is to end up using something like this:


www.amazon.com/Rectangular-Headlight-Replacement-T001N-4pcs-Colight/dp/B07BRZ5J69/

[90GTVert]

I've ran multiple LED headlights on the stock system. Lots of flicker at idle, but otherwise they did OK. Some say they won't last as long in this configuration. I did have one or two fail what I'd say was pretty prematurely, but others did great.

Some do use a bridge rectifier for the headlight, and even add a capacitor to remove some of the ripple.

I converted my whole system to DC. That let me use a quality reg/rec and also have a bright headlight at all times without flicker (to the naked eye) because it's running on battery power. It's not as bad as it sounds like. With a stock stator that I floated the ground on, Trail Tech reg/rec, a 40-something watt LED headlight and LED tail light it still gives me over 14V charging just above idle on a good battery. I avoided it for a long time thinking it was worse than it is, and now I'm not sure why.

[88jog]

I understand mechancals pretty well, but things get a little foggy when I start dealing with electrical systems.

Is there a good walkthrhough on how to do a complete DC conversion using the stock stator? I get the impression that basically the grounding system needs to be reconfigured, and a diode and capacitor needs to be added on the positive side to prevent backfeeding of excessive voltage.

[90GTVert]

I'm planning to do a video about mine at some point, I've just never tested it on a long ride to sort of finish. Now I'm adding an electric water pump and a fan so I'll really put it to work and see what it can do.

Here's the reg/rec I used and instructions on wiring. I use their built in relay for the headlight/tail light. That makes it easy, and also it's kinda cool IMO that it stays on for a few seconds after I turn the scoot off (but you can adjust that).
amzn.to/2NsJNBu
www.trailtech.net/media/wysiwyg/pdf/010-ELV-116.pdf

I've done a few stators now, aftermarket and stock. First aftermarket was the hardest, but that starts a lot of the process in my build so that starts here :
49ccscoot.proboards.com/post/322878/thread

Here's where I converted a stock stator. Don't have to pull it apart as much as I did. I didn't on the second I did. I just wanted to take a good look.
49ccscoot.proboards.com/post/324421/thread

I built a whole scoot harness from scratch because it was a part of a bigger project, but that's not at all necessary. Basically the 2 charging wires from the stator will now go to the yellow wires of the TT reg/rec. You leave the other wiring alone for the ignition/ground of the stator. Reg red goes to batt +. Reg black is a ground. If you want to use the built in relay, you can run the red/yel wire from the reg to the headlight switch to power them. I put a fuse inline. Otherwise, you can run run from batt + with a fuse to the headlight power or use a relay to power them by the battery with ignition switched power as the trigger so they can't be on if the key isn't on and drain the battery.

That's most of it in a nutshell. If you check that stuff out and still have questions, hopefully I can help.

[geoffh]

88jog,are you sure it,s a sealed beam unit,mine is a replacable bulb,I may have an old head lamp unit but it.s for a right hand drive country.

geoff