I bet your rear light isn't working either. Not your brake light but your running light.
Therefore, either Fuse 10 is out or Fuse 8 is out as fuse 10 is in series with fuse 8.
Your speedo isn't lit up. So fuse 8 is blown and no matter if fuse 10 is good or not, the rear tail lamp will not work. However the brake light is on a separate fuse from fuse 8 and fuse 10.
I now nothing bout
lectrics either. Really. I just had to fingure out a simliar issue a while back.
Heads up: If the leads to the position indicator lamp in the headlight bucket are reversed you will have a dead short.
Edited: for what it is worth, there are two bulbs in the speedo gauge. the odds are lottery weak that all the bulbs are bad.
