ABS Light, Blinker, Brakes going nuts

after my last 2 refuels, the ABS Light has come on almost instantly, and speedometer goes crazy when the turn signals are on or the brake is pressed, the last time it went away the next day, but the problem is still here after the 2nd time it happened, the better part of a week ago..any ideas?

Ford has a bulliton out on a plug that corrodes. It is under the drivers seat but you can get to it under the vehicle. Try unpluging it and look to see if there is moisture in the plug. you will need a 10mm socket to losen a bolt that holds the plug,then just pull down to separate.
Do you have a vinyl floor? I do and I found water under it that condensates around the plug. good luck