Bulb out on my dash cluster tried to repair

Winter is on the horizon but I took 3 nice rides in December.  I noticed a bulb was out in the cluster. I was able to pull all the plastic of with out breaking it . I was able to pull the cluster so that I had access to the two electrical connectors but for the life of me I could not figure how to pull them off. I removed the neg connection on battery to avoid shorting it out. I said F.... it and put every thing back all is good except now the rpm number is only showing part of number graph works.

I have the bulb kit but I guess in the spring I will take it apart and bring to a mechanic to pull the connectors then I will replace all bulbs but something else may go wrong.  

If the mechanic removes the connectors can I drive car home?  Then I can replace all bulbs and if all is screwed up I can have cluster rebuilt.  Is the derivable with cluster not connected.  Thanks for any help.

What year?

The red car in photo?

1988 with 84000.

Yes it is drivable without the instrument cluster. Check out batte.com. He does a lot of rebuilds for C4 instrument clusters

I checked his site that's were i purchased his led bulb kit seems like an honest guy.