Ahha! That explains why turn signal lenses for the rear have been so hard to find here. I also feel less bad about using hand signals for now. And that also explains why the FSM I have doesn't show turn signal wiring.

I need to scan that FSM one of these days I have a 1970-71 HT1, HT1B, HT1BMX FSM I got off evay back in the early 00s. It needs to be archived as I have not seen it anywhere else.

Unrelated to electrical woes, is there any reason a JDM bike would be jetted differently than a USDM one? The service manual calls for a #85 main jet, my bike had a #75 in it that looks to be original and ran like junk the moment I put in the "proper" #85. And that's with a high flow K&N that my uncle put on way back when.

Right now it's super happy with a #80 for the pre-mix I am running. I am only at like 1200ft above sea level here, so no crazy altitude or anything.

I view carburation as one of the dark arts, so will leave for others to answer. However, I did notice that the HT1 uses the jet setter, so make sure that the small 'O' ring (number 6 on the diagram) is in tip top order - new ones are still available from Yamaha.

Yamaha HT1B 1970 USA CARBURETOR - buy original CARBURETOR spares online

Turn signals were not required in the US on motorcycles until 1973.

If you have them on an earlier bike, they need to work.  But you technically don't need to have them.  

Oh, and good luck finding a job.  It really is a PITA struggling for dosh. 

Thanks! Yeah, job hunting is gonna suck. But it's nice finally being well enough to do so!

I remembered the weird moped store I ordered cables from for another project (andual throttle body, front mount intercooled, supercharged miata...) called treatland.tv
.

Turns out they have some odd ball sized headlights for vintage mopeds, one has a removable lense that takes a PD15 bulb and the lense is 4.5" diameter, the headlight is 5". That may fit perfect, and if not, a small 3D printed trim ring should do the job. I ordered that and will report back.

Also, how do I post photos? BB code isn't working and I cannot attach anything,

Turns out I can go exactly 116.2km on a tank of fuel. That works out yo 72.25mi and 42.5mpg, way worse than I expected. opps.

Good thing I found out neat my parent's house. Also, it just dies hard, no sputtering or anything. Wild.

You have enough posts now that you should be able to post links, including links to photos on a 3rd party site like Imgur.

On the jetting, first rule is you give the engine what it needs.  Second rule is see first rule.

Regarding the size of the main jet possibly being different on the JDM HT1, it's not wise to look at the size of one jet out of context.  The slide needle and needle jet are two things that can dramatically change the size of main jet needed.  So unless you compare all the carb and jet specs from your JDM to the US model specs, you really can't tell much.  Heck, maybe they even used a different carb size, air filter arrangement, cylinder porting, or something on the JDM  

So this is why I made this thread. It's back to being a PITA. At least it's being good to me and only doing it at home. Started perfect every time while I was out the other day (third kick from cold, first kick warm. Every time).

It's back to it's not starting again. Tried earlier today after filling it up (left the fuel on overnight and came back to 1/3rd of a tank. Of course I filled it full yesterday...) and it puttered after two kicks and then didn't do anything after that. After a bit of kicking I figured I had flooded it and pulled the plug and let it air out for a few hours.

Came back, checked spark, put on a fresh plug, got a putter on the first kick and then nothing after that again. Even with starting fluid. Also checked compression and just kicking it lightly got 120, so that's good.

Guess I will pull the carb out and check for junk in there and go from there. Gonna need to order some new o-rings and hope the gasket holds up (The gaskets for this carb are not cheap, $15 for two, I may just make one...).

Don't leave the petcock on.  Probably just flooded.  Can be a PITA to clear.  

I went through this dozens of times as a kid with my LT2.  I got pretty good at clearing the flooding by removing the gas tank, spark plug out, piston at BDC, laying bike on side and then upside down to let excess gas in pipe and crankcase drain.  

P.S.  Original bowl gaskets can often be used many times.  Float bowl gasket is Suzuki Part 13251-11010 and can be found from Suzuki for about $5.  (1971 Suzuki TS185 if you need an application)