How does adding another current drawing device help your voltage regulator? I think that may be a bit of speculation/luck. Heat is a factor of current disaptation through heat loss energy. Thats where your electric bill goes...right out into the air. The more current or electricity you draw from a curcuit the more heat that is generated. Basic Electronics 101. The majority of the heat is generated by the motor(I have been testing this) Any voltage spikes that are generated by the Stator that have a frequency and voltage high enough to take out an Vreg. will do that no matter how many head lights you have. The components are cheap, weak and buried in potting compound that holds in more heat. It sits above yopur clutches and is buried in a plastic case...just piss poor design of a 1.50 part. Whne you buy these type of Vregs by the thousand the cost is very little. The mark up is great.
You answered your own question. Heat is a factor of current dissipation either through the voltage regulator, or the added head light. Preferable the head-light and not the voltage regulator reducing the temp of the VR. In other words the excess voltage from the stator is going to the headlight and not the VR. I am no electrial engineer but I think this is the basic logic of those adding a head light. It would be hard to validate adding the headlight is reducing the amount of failed VR, or the new VR are of better quality. I have read that the new replacement VR pn 4012476 have a different part number than the old ones pn 4011731 because they improved them. Seems if the newer one are having less failures than the old ones.
