I have to keep my battery disconnected for within hours it will kill it... I have a clicky starter fix and some times it will still click a few times before it starts what could be my problem here? Also if I hold down on the horn and flick the headlights on and off the horn goes up and down like it's losing power and my wiper motor runs one speed no matter if its on high or low and is very slow... what could be my issue its a 1990

Bad ground issues cause all these sorts of problems, all except the
draining issue, that must be a load problem, could be through the
alternator.

Remove all the fuses and check for a spark as you connect the battery
cable, or use a tester to detect a load drain, if you don't get a drain, start
connecting the fuses 1 at a time until you find it, and go look at the part
that is causing the problem, same can be done with the alternator, it's just
the plug on the back instead

Wild