no start no crank

My 90 ls has been running fine for a while now, but I let it sit for a while and the battery died…since then it has given me intermitent problems starting just a click, so i bump start and battery light would flicker on startup…also i notice blowers and radio only work if the key is being held between the 2 and 3 positions. So I drive like this for few days…then suddenly there is no click at all upon attemting to start car, and the problem is no longer intermitent…I have to bump start or jump the starter every time now.

So I get a new battery and put it in, same problem. Starter is fine because I can jump it and I also saw it tested at autozone…they also tested alternator and said it was fine…I pull put ignition switch and the solder points are fried, inside contacts are also badly worn.

Thinking I found the problem I buy a new one from autozone…install and same exact thing no start no crank…I jump the clutch switch to bypass and still nothing…I am conpletely lost any advice???

check/clean your ground cables/connections. there is one from the battery to chassis and one from the chassis to transaxle housing. the one from the chassis to trans sits below the battery tray. it tends to get very corroded under there