1976 KZ400 D3 tail, speedometer and tachometer lights not working

Hey guys!

I was replacing the turn signals the other day with more chic ones and noticed afterwards that my tail light, speedometer and tachometer lights weren't working anymore. It seems like they're connected according to the wiring diagram . img78.photobucket.com/albums/v291/ibsen2...3_Wiring_diagram.jpg

Has anyone had this happen before? Did I just undue a ground wire by accident or did I blow a fuse? If i blew a fuse, does anyone know which would be the right replacement for it and where that fuse is lol

Any help is super appreciated! I such with the electrical stuff

-Anthony

Does the brake light work? The fuse box is probably located behind a side cover, usually the LH side. If there's a tail light fuse, the fuse box may be embossed with TAIL.

PS: photobucket is the worst. I can't download the pic to rotate it. A sideways pic isn't very helpful, to me anyway. I prefer Imgur.com.

Meter on DC V
Ignition on/engine not running
Do not disconnect any of the lights or connectors when doing the readings.
Circuits must remain complete
Black probe on negative battery post(the post is the metal part of the battery)
Red probe on positive battery post
Note voltage.

Move red probe to the positive wire of tach light (blue wire)
Note voltage

Red probe to negative wire of tach light (black/yellow)
note voltage

Photo: www.classiccycles.org/1852/597943.html