1980 Yahama YT125G Tri Moto Voltage Regulator

[BigSkip33]

I am new to 3WheelerWorld. I have a 1980 Yahama YT125G Tri moto. My headlight bulb burns out immediately after I replace it with a new bulb. I feel I need a new voltage regulator. Earler I noticed one of your members has voltage regulators for sale for my trike. I would appreciate any help I could get along this line. I await your reply Thank you.

[ezmoney1979]

I have read that you must have the tail light in place or you will blow bulbs immediately. However, when I got my YT125, there was no tail light on it. I put a new headlight bulb in it and it blew pretty quick, then I bought some bulbs on eBay and tried one. Its been working fine ever since. I probably bought bulbs that have a slightly higher wattage which is making up for my lack of having a tail light. Be sure to have both bulbs in place before ruling it out as a bad regulator I guess is what I'm getting at. Good luck.

[jwhking1315]

Moose racing also has a universal regulator, but you have to be a bit knowledgeable about your wiring harness to install

[Highhorse78]

Ezmoney is right about the tail light, but there is not a voltage regulator in the stock electrical system. In a sence, the head and tail light are the sole "regulator" in the system. Say your head light burns out due to the life of the bulb, your tail light will follow, and vise versa. This is because of the excess voltage available. Now you could add a higher wattage head light bulb, it just wont be as bright.

[CodyRosa]

I have an entire 125 im trying to get rid of. It should be a complete machine so I can see if it has one.

[Howdy]

Moose racing also has a universal regulator, but you have to be a bit knowledgeable about your wiring harness to install

I have sold and or used 50+ of these, and I still have a few for sale. You really don't need much knowledge to install them. One wire goes to ground, the other wire goes to the power ( +) that feeds the lights. 1-2 zip ties holds the unit to the chassis and your done. It shouldn't take over 30 minutes on most machines.
Howdy

[jwhking1315]

I have sold and or used 50+ of these, and I still have a few for sale. You really don't need much knowledge to install them. One wire goes to ground, the other wire goes to the power ( +) that feeds the lights. 1-2 zip ties holds the unit to the chassis and your done. It shouldn't take over 30 minutes on most machines.
Howdy

I meant they have to at least know what they are doing, which wire is what, etc.

If I recall correctly, I believe I bought one off you for my 350x years ago

[old-yellow]

Welcome to the forum, just like highhorse78 said you need to have the both bulbs to make the voltage even to both lights or it will keep blowing bulbs.

[Howdy]

I meant they have to at least know what they are doing, which wire is what, etc.

If I recall correctly, I believe I bought one off you for my 350x years ago

Very good chance of that. I know I was beating online prices for a long time. I no longer have that supplier due to slower sales. What I have on hand is the last of them.

Howdy

[mdeckeradpro]

I have a Tri Moto 175J. I put in a headlight bulb, worked great for awhile, but now it is dim. Don't have a taillight either. Ground is good. Any ideas?