Electrical problems all around!!

I have a 98 JGC Laredo with about 160000 miles on it.
-The locks on my doors with start locking and unlocking by itself all the time
-My turning signals will work for about 5 mins, then somethin triggers them and you have to hit the side of light for them to start workin again.
-AC shuts off every once in awhile, then you gotta hit the top of the dash for it to work on high or come back on.

Other than that the only other problem i have is when it stalls out on me. In the middle of me driving it will loose power and stall.Or when i come to a stop sign it will stall.. and then other times it will sputter really bad for about 20 secs while drivin down the road and then stop and continue to drive. Iv read alot of posts and iv come to the conclusion its my crankshaft sensor, unfortunatly iv already replaced so much in this car i dont want to spend more money on it if its not the problem. I do have a cracked radiator having to put water in my car about 2 times a day..what problems could a bad radiator cause? And should i replace the CPS?

You are having a problem with security sistem make sure your battery is new in the keyless , make sure the battery is good in your car this can cause this problem . let me know good luck