Mazda 5 Venture, blower, lamp and charger port
 

I wonder if anyone can shed any light and if this is a quick fix for a menial like myself.
our 12v port stopped working, then few days after the front headlight went (I'm assuming bulb, not got around to it yet) but now this morning the blowers are not working at all and I'm now wondering if this is just crap luck OR it's a central problem somewhere.

​​​​​​Any insight would be appreciated.
it's a 2012 plate Mazda 5 Venture
Thankyou