How can I fix My Wipers, They have stopped also the heater?

My windscreen wipers have stopped working and also the heater has stopped also, I have found the fuse box under the steering wheel and changed over the correct colour but still nothing.
This is a Renault Convertable S reg Megane, 1997.
Everything else is working fine I am bit worried to drive long distance.
I have tried starting the car a few times also letting it warm up etc (after changing the fuse) I also made sure the radio was off I know that sounds silly but wasnt sure if It was electrical and if that made a difference, I tried over the last couple of days and no luck, any help would be good thanks.