Car making squealing noise Options

[CAMAricer]

Hi guys, got a weird problem. Hope someone can help me.

My car is making a high pitch squealing noise when the car is parked and I turn the wheel hard (all the way) in either direction (let's say to get out of a parking spot). If I let up just a bit (return the wheel towards it's neutral position), the noise stops. Also, at night when I do the same thing with the headlights on, I can see the lights get slightly dimmer. Soon as I let off, the lights return to normal. So I think there might be a connection there.

I first noticed this problem when I changed the break pad on my car (for the first time). I ended spilling some break fluid over the rotor/caliper and haven't used brake cleaner to clean it up yet, don't know if this info helps or not.