I have a 98 V70 and the heater and all interior lights went out while driving. I replaced the fuse and they started working again for about 20min then quite. Now there is no fan and the dash lights are not working. Every time I try and put a new fuse in it blows.

Any help is appreciated.

Thanks

 

I will have to find my wiring diagram and try to look what fuse # blew?