ID my machine? (Tether problem)

Someone gave my Grandson a nice little quad but there's no identification on it other than a decal on the motor that says "GTO" Any idea what this machine is? It ran fine when he got it but my son unplugged the tether to make sure it worked (which it did) but now there's nothing - no lights, no power to turn the engine over etc. I do have 12 volts at the tether and tried jumpering it but we have the same results. looking for any info I can get because I'm not looking forward to taking the handle bars, rack and front fibreglass off of this machine to troubleshoot this further. Thanks.

"A picture is worth a thousand words."

Here's some pics I took with my cell phone - not too sharp but maybe it'll help ID this bike:
http://i110.photobucket.com/albums/n...ps903kppr8.jpg
http://i110.photobucket.com/albums/n...psbs6jtdwm.jpg
http://i110.photobucket.com/albums/n...psvzoxhjel.jpg

I believe that you'll get some useful info by adding term as 110cc in your search engine. Most (if not all) of those "horizontals" (small displacement engines with horizontally orientated cylinder) use the same wireing diagram, but this tether is spoiling all the fun...

Honda CT 90 CT 110 that's what the engine basically is
All basically the same etc fairly simple but contact human beings
Core of the loom is same but might have a couple extra bits added like safety start etc maybe lights no lights etc but back bone should be equal