I took out my cluster to replace the lightbulbs, when I put it back, everything works except the RPM gauge. It doesn't even move at all. I've tried soldering the points recommended in another post above. Is there anything else I should look for to get it to work?

Thanks.

 

https://dodgeforum.com/m_179505/tm.htm

^^^HERE , this might help.

 

if the tach worked before, then the cluster might just be loose...you can try wiggling it around....or maybe sumthing inside broke....