Modern Vespa

So here is another headlight mdoulator installation report. Unlike some others here with more foresight than I had when doing this, I did not take pictures while doing it, but this report can still be helpful, I think. First, when selecting a modulator, I read a lot here and first selected Comagination modulators for my 2 GTSs. Once I got them and installed them, I found that they worked great at idle, but as engine rpms increased, so did the rate of flash until they looked like there were no modulators they were flashing so fast. Phil at Comagination speculated it might be excess current from my scooters so he swapped them out for similar units with surge suppression, and they also did not work--same problem. Phil thought my scooter was overcharging. Problem with that theory to me was that my "scooter" was actually 2 brand new GTSs, and both had exactly the same problem with the Comagination units. Maybe the GTSs put out too much current for the Comagination modulators. Your results may vary if you have a GTS (but I doubt it). No problem getting a refund from Phil, but much time and postage was wasted. Back to square one.

Next, I found this thread talking about Kisan modulators. Kisan PathBlazer Headlight modulator
It seems "addicted" installed one and it worked well, but he did not recommend it because of clearance issues. The Kisan is a cool self-contained unit that plugs onto your bulb, and your stock plug then plugs into the Kisan -- a stacked arrangement. He found there was not enough room for the stack, so he had to disassemble the stock plug and bend the leads to make room. I went to the Kisan site and found a variation of the unit he used that has a remote plug for the stock leads, keeping the stack height to the stock height. It looks like this:

I ordered 2 of these and installed them in both GTSs, and they work great. Truly plug and play with no wires to cut or splice and no clearance issues whatsoever. Next issue was where to put the light sensor. The Kisan sensor requires a fairly large hole (I have to admit the Comagination sensor is very skinny and easy to thread up through the mirror grommet--small consolation if the modulator does not work). Addicted mounted his in his front headset cover behind the headlight. I chose the rear cover next to the instrument cluster so it looks a bit like another button. If you do drill your painted bodywork, be sure to use many bits increasing size one increment at a time until you get to the correct diameter hole. If you use too big a bit, it can grab too much of the nylon-like plastic and chip some paint (don't ask). If I do it again I might actually try a unibit, but that's another thread. I also had to trim down the mounting tabs on the black plastic grommet that slips around the brass sensor body to make it easier to press into the hole I drilled. I used a nice new single edge razor blade. This made more sense to me that drilling an even larger hole. In the photos below, you can see the black grommet around the sensor. The red install was very clean. The blue had an issue with the paint chipping slightly around the hole since I used too big a bit at first, so I slipped a small o-ring on the assembly before pressing it into the new hole and the o-ring protrudes enough to cover my sloppiness.



The Kisan unit with the remote plug is the P115W-S, with the "-S" being the critical distinction between the one I used (that fits easily) and the one addicted used that did not fit so easily. The light sensor is adjustable so you can vary the ambient light point at which time the modulation starts and stops, and the light sensor plugs into the main unit so if your sensor malfunctions (or you mess it up), a new one can be bought for 10 bucks.

Here's a link to the module:
http://www.kisantech.com/index.php?cat_id=2

Lastly, note that this project is not hard, except if your headset cover decides to fight as hard as both of mine did to remove. You might want to check out this thread in which I whined and cried about it until I figured out a solution:
GTS Headset Cover Removal--I NEED HELP!!!!
Good luck!
Jeff

Apex..........i wasn't able to find a thread that told, or showed that this brand would work on a 06 GT200L..............what would be your best guess, or do you think they would know for sure at "Kisan" ?


Thanks

mr. impatient/godoggo

Ok, thanks to you I finally ordered one.

I did find it cheapest here:

http://www.ridesafer.com/category_s/26.htm

$104 including shipping. No tax.

godoggo-- I don't see why it would not work on any 12v vehicle with an H4 bulb. And they have versions for lots of other types of bulbs too.
Jeff

I installed a Diamond Star headlight modulator today.

The light sensor is in the right-side mirror boot. I'm going to spray paint the chrome nut to black so it blends in better.

I ordered and installed the P115W-S

Unfortunately it stops working at anything above idle.

They are sending me a replacement to try. I hope that works

That's why I decided to go with the Diamond Star modulator; several members here have had similar results w/ the P11W-S.

Hope it all works out.

I've installed P115W-Ss on my GT and my wife's LXV and both (knock on plastic) have been working fine and appear to be very noticeable...except to that dude in the BMW on his cellphone.
Dongoose

I'm revisiting this post because...I just noticed that people have problems with BOTH the Comagination AND the Kisan units flashing more rapidly above idle on GTS's.

First post= Comagination doesn't work, Kisan does. (Apex)

3rd post above mine= Kisan doesn't work, Comagination does (Petrol)

This is from a year ago.