1993 buick regal stalls out when alternation wire is plugged in?

Check coolant temp sensor. If bad, it will make computer think the engine is still cold, causing excessive fuel delivery and flooding. These sensors can be removed and tested (see instructions in shop manual)

hi, I use to have the same problem I had to change engine electrical wires, then I had to change the crank sensor and the module ( destributer ) first let him check the complete wires installation then if they are good let him change the crank sensor

Sounds like a relay or coil failing.
To proceed you would need to find out if you are loosing spark to the plugs or fuel pressure to the injectors when it won't start.

Having a qualified repair shop do diagnostic's on the vehicle would be your best bet . Could be any number of thing's ,engine mangement system sensor's , fuel system , ignition system , engine mechanical systems etc.... Could be as simple as just needing spark plug's & wire's , fuel filter . But , some testing should be done by a qualified technician with a professional scanner .You don't want to get into a guessing game , one person tell's you it's this or that , because without doing testing they are just guessing .
011 Fuel System Tests Fuel System Scan Data
012 Ignition System Tests Start Here
these videos are just to show the complexity of these computer systems .

Do you have a check engine light on? If yes; try to get the code, have someone loan you a scan tool to access the codes. If you do not have a check engine light on it is not a ecm control issue, ie. (cam or crank sensors etc). Suspect the fuel pump. If you are certain it is working ok. Next is to check the coil pack and Ignition module. Look for spark at the plugs. Pull a plug wire and look / listen for spark to jump out the end to bear metal as you spin the engine trying to start it.

Sounds like a plug wire or cracked coi arcing over and shorting out your tach, take a spray bottle of soapy water, start spraying plug wires and coils, you will see the arc in the water.

it is the large round piece located in the round plastic flex tube that connects to your air filter and the other end to the throttle body,you can do a tap test on this piece,start your car,and tap on the flat part of the MAF sensor,if your car stalls right out it bad,use a screw driver handle to tap with.

The average life of a battery is 3 good years, regardless how BIG, or how it cost. Anything after that is a blessing. Personally, I would replace the battery ASAP, and then with a FULLY CHARGED battery. Then drive, and see if the problem still remains. Hope this helps

could be to many thing to take chances with, but most commonly;fuel filter,gas line antifreeze or a crack in your air intake which would take your vacuum seal away, start with the least expensive and work from their. Worst case scenario pinched fuel line

you might have bad plug wires replace wires and saprk plugs