What is the red sign in my dash? It's a circle

Well there are many images that could be shown in your dashboard

ANTI-LOCK BRAKES LIGHT

BRAKE PADS WORN LIGHT

So it could be either of the two. I would take your car to a mechanic and have it checked out.

You're going to have to sit in there with your head on the floor and feet on the seat and look under the dash and the clutch and brake pedals.
Last time I was under a ford dash there was a large pin welded in the middle of a bracket. half the pin in the inside of the braket was where the brake pedal hung from and the half on the outside was where the clutch hung from. The pedals are suposed to have bushings in them. Perhaps a pedal froze on that pin and the pin broke free from the bracket.

You're going to have to look to know for sure.

I took a quick look but couldn't find your model but in a BMW you have a "Dynamic Stability Control" which is for controlled driving in bad situations basically. Now like I said I couldn't look up your exact model but look in your vehicle for a button on the dash/radio/instrument cluster. The button you want to find should be marked "DSC" which turns this control on or off manually. You may have hit that button by accident. Push it and it should turn the system back on. If that doesn't work it means you have a problem in the DSC and it is not working. If this is the case unless you are a BMW mechanic, you need to take it to someone who is to take care of it. It's no real danger like the brakes are out but the handling will be limited to what it used to be. That's what both those lights on together mean. I hope this helps and good luck.

It's an yellow warning indicator lamp. It lights when brake pads are weared. Now it's time to replace the used brake pads!

possible parking brake light, or brake warning light, ck brake fluid???

It's the low coolant light. Just find the overflow bottle ( it'll be marked coolant). If it's not low then the sensor that goes to the bottle is bad and may need replacing.

If you used the factory earth wire cut it and earth the stereo to a metal dash braket.

I already found the owner manual on the internet. thanks for helping me out.

Hello!

A sign like this indicates that your parking brake pads(shoes) are worn, and are in need of replacement.

A sign like this indicates that there is problem with the ABS system (can be anythig from a faulty wheel speed sensor to a burnt out fuse)
A non functioning ABS could bring the tires to a lock up during extreme braking which could be rather dangerous.

Hope this helps!