Need the get my abs sorted for the not

Light is staying on in the dash

Where do I start and what do I need to do to get it functioning correctly

 

Alright mate get yourself a multi meter and unplug the abs sensors test the sensors for resistance ( 1.200 to 1.600ohms) if you have a knackered sensor it will should no resistance. if they all ok turn the multi meter to millie volts and spin the wheel the voltage should jump about if not you have a air gap problem or something up with abs ring
hope that helps cheers brian

 

Wire it into the handbrake connector in back of panel, handbrake off, light comes off and so does abs light