I have a vintage 1970 Suzuki TS250 single two stroke, oil injection....anyway! I have an ignition switch with OFF//DAY//NIGHT settings. I didn't know this till the other day when I bought her and finally got her started after a two year vacation in somebodies back yard. After I blew out all the bulbs...I bought a Clymers manual (Suzuki doesn't have a regular service manual). With a rectifier tapped for daytime use my brakelight and turn signals work...night and tail lamp and headlight are also on...Page 70 says that if you blow the headlamp 25Watt that you are most certain to burn out the rest of the lights due to an overvoltage situation that is now present. REally! So this is EXACLY what I did. SO, IF I replace all of my lamps with LED's (Current not Voltage now is important...) the NAPA guys just laughed at me...am I out of my mind thinking that I can use a Zener Diode in line to restrict the voltage (aprox 9Vat 6,000RPM) in my 6 volt system will work? I'm an electronics technician, but I'm blown away by this situation. Perhaps going directly off of my battery (filter) then through a relay I could run all of my lights and not wory about them...Other than going t an old type voltage regulator like on the antique cars...and setting the regulatior at about 7.2-7.5Vdc...how do I get around a Magneto based system..or use it to my advantage?