I just recently purchased a 1987 300 SDL. The odometer didn't work. I followed instructions how to remove and check and replace gears. I found the e1 and e2 gears were missing teeth and ordered new ones. I put the cluster back in and now having weird problems.

Speedometer doesn't work at all when it worked previous to my dis-assembly

Turn signals don't hear the flasher clicking nor green arrows. When headlights turned on left arrow is constant green whether turning or not, but can hear the clicking of flasher. The actual turn signal light bulbs flash outside the car. The right turn arrow doesn't come on inside the car but works outside.

Other gauges work fine with the exception when the headlights are turned on. When on, the oil pressure goes to 0, temp maxed out, and fuel full. Turn lights off and back to normal.

What can this be? I've tried searching for this problem and didn't find much.