Electrical issue/ engine cut out
Hello, i recently bought a 2001 156 2.5 v6.
I noticed a few days after purchase that the speedometer wouldn't work when the headlights were on. The next day the speedo wouldn't work at all. A couple of days later i took it for a drive and i noticed that the engine started to misfire and lose power at high revs, this became worse as i switched on the headlights, wipers and even if i indicated. After about 30 minutes of driving the engine cut out completely. I turned off everything electrical, waited 5 minutes and it managed to start and take me home. Over the next few days the time until the engine cut out decreased, until today when it won't start at all.
Does anyone have any advice or possible solutions.