Head Light

[Diver]

Hi All.

Can I swap out the Standard Head Light Bulb with an LED Bulb or do I need to do any modifications.

Regards

Chris

[Rich82GS750TZ]

Year. Make. Model of bike?
The site's search function is your best bet.
I don't recall reading of anyone having any luck with a bulb replacement.

For replacing a whole sealed unit, Truck-Lite is the popular whole-unit plug-n-play replacement that fits models with a 7" bucket.
Here's one such thread about that:

https://www.thegsresources.com/_forum/forum/technical-forums/electrical-ignition/1693528-i-would-appreciate-input-on-led-head-lights-lights-and-accessory-lights

One thing you need to make sure of before going to LED, is that your charging system can handle it (the lower draw). Many of us have gone to using a series type R/R-SH775, and eliminating the stator headlamp loop, which handles it. Don't ask me how. That's above my pay grade.

[Diver]

1980 Suzuki GS850G

[Grimly]

I've succesfully fitted H4 LEDs to all my bikes, but the crucial thing to look for is the LED cobs must be nearly in the same position as the original filaments.
Many of the cheap LEDs have cobs that are far too big and the result is a wild scattering of light.

This pic shows the Philips Ultinon, for reference.

[Diver]

Brilliant, thanks Dave.

[Grimly]

Brilliant, thanks Dave.

No problem.
There is something else...
Some of the original parabolic bowls and lenses don't work well with some (even good) LEDs - however, some LEDs have an adjustable / rotatable base by which you can alter the beam pattern and lock it in via small screw on the base of the bulb. Not entirely sure how common this is, as some of mine have it and some don't.
By experimentation I was able to mix and match to get good outcomes, but just lobbing in an LED is no guarantee of success on its own.
My next purchase will be a set of the Philips Ultinon, as I assume (rightly or wrongly), they've paid a bit of attention to proper fit and location, and they have a couple of EU approval docs, which most of the others don't have.