Instrument Panel Electrical Problems

This morning when we started our 1999 Chevrolet Venture van our anti-lock brake light came on. We drove it to where we were going and parked it for about an hour, when we cranked it up again the anti-lock brake light turned itself off after the self check as it has always done before. Problem solved, right? Wrong, later in the day my wife had to take the van out once again and she noticed that the turn signals on the instrument panel were lighting up every time she depressed the brake. One other sort of odd thing also was occuring with the brakes and the turn signal, it will signal quickly when you depress the brakes (if you have the turn signal engaged -- like when you need to signal to make a turn), when you release the brake the signal goes back to its normal flash timing. Also my wife experienced the ABS light turned back on in mid trip. One other bit, sometimes my AC fan don't want to start when you turn it on but eventually starts to blow. Does anybody know what might be causing these electrical problems?

You may have the infamous short in your rear brake light connection from the wire harness to the rear lights. Do both your brake lights work or just your 3rd light on top? Is your cruise control out as well? Both are related to the short. If brake lights are out I can reply with the fix. Otherwise, others need to chime in since my knowledge on this one is only repairing the short at the rear brake light harness.