Heh, Rastas prob talking about me...I can be a bit abrasive around the edges. Of course with Rasta...ya never know. If I come across a bit sarcastic or heavy handed don't take it personal. once ya get to know me you will understand. I have all the patience and tact of a drill sergeant.
Okey dokey... I will see if I can "essplain it to ya Lucy"
First...Do ya get voltage to the low beam connector on the lamp/ lantern/ headlight? also, is there a good Ground connection?
if no, you have to find out why. Using the current flow diagrams referenced...you need to check for voltage at key points. Is there power coming out of the switch? into the switch? from the fuse to and or from the switch?
Yassee...I don't know what is wrong...I am guessing from many miles away and that makes it difficult as my crystal ball is out of batteries. The logical and time effective way to accomplish your objective is to find out where the power is...what path it should take... and find out why it isn't getting there. Think of it as a path that the power SHOULD be going down, but isn't.
So far all I know is that "it doesnt work" and "replacing parts didnt fix it". We need a more logical and organized approach as time is a precious gift not to be squandered. Therefore, get down and dirty...Check for hot at the test points for the basic circuit. Work your way back from the light or forward from the battery. IMHO, back from the light is a better choice. If you want to get TRULY obsessive you can transcribe the circuit from the comprehensive diagram onto a postcard and work from that.
Oh and Pick up one of those Arkham's Razors...they are great for doing electrical work