Front light repair

Hi Patrick,
Either you can go with what Tars has said or else you can replace the light. If you think that you are not able to repair it by your own, then you can take the help of the expert electrician too. Last week, my colleague has faced the same problem as of yours. When he was not able to fix the light, Electricians Bryn Mawr PA team has helped him in solving his problem. You can also look for some expert advice from your area or else can choose different options too.

Mine drains to the back street side unless the wind is blowing. I level at the tounge but not sure if that means anything else is level 

My switch was finicky after I picked up my new green 2017 179 HRD.  I let the dealer know and they sent me a new switch.  I have yet to replace it.  Sometimes I have to click it 4-6 times before it lights.  Try a shot of wd40 in the switch and then give it a few clicks.  A replacement switch should be easily found at your local auto shop or you can buy an entire new light on amazon for decent price and use that switch. 
Good Luck!

Exact same thing happened to me.

That light on my TT seems to be the one that has the most moisture inside the lens. I replaced bulb with LED and applied dielectric grease to the bulb prior to install. You can check resistance on bulb to make sure it is good. You can also check the socket for power. If you don't have power to socket you have a wiring problem. On my 178 that wire is primarily in the front storage compartment. I have seen it but had no reason to do anything with it, as my light works.