Few Small Issues I Need Help With

So a few months ago when it was still cold out (by Arizona standers) I would notice my blowers wouldn't come on all the time some times I would literally have to turn the car off and on a few times for them to work a short time after that the turn signals stopped working but every once and a while they will start working again seems to be random. But here is the thing both turn signals and the blower comes on when the vehicle is in the run position but will not work with the vehicle running. I'm thinking its the ignition switch but wanted some more input. I would like to get this fixed asap I need my A/C up and running soon I don't want a 6th summer in 115* weather not fun.

Thanks in advance,

Dave

thanks guys i picked one up today and will install it in soon enough