i have a 2008 s80 and recently replaced the battery. After replacing the battery, i now have no power at all. interior lights/bells/dashlights do no come on. No sign of life. i checked all connections, fuses, had the battery tested (good battery), but i can get no sign of life. What should i check next?

 

Assuming you connected it correctly next thing is to start probing with a volt meter. volts from battery post to battery post? volts when going from + battery post to chassis ground point? volts to the main fuse/relays? etc. Does anything come on that's not tied to the key?