Q: My car won't start - 1997 Jeep Wrangler

The Jeep died going down the road, I lost all power and wouldn't crank. As soon as it died I popped the clutch to jump it and it came alive for maybe a second before it died out again. I came to a stop and checked all gauges fuses inside and out and couldn't find anything. It was completely dead, no lights on the dash, no radio, nothing. I do however have aftermarket lights installed that is ran off a separate switch from batt, that would come on but nothing else. I got it towed home and started looking at things. For about two weeks it wouldn't do anything, then one day it had power. Lights came on but wouldn't start. It would make a rapid clicking sound like the batterie was dead. I pulled out the voltammeter and I was getting 12.6 volts. I checked all the grounds all the positives cleaned every terminal, on the battery on the starter everywhere I could. The other day I got it to start, it ran for 10 minutes and as soon as I shut it off it went back to no power or anything. No codes

My car has 185000 miles.
My car has a manual transmission.