Just bought my son a 98 1500 sport quad w/360 while driving the abs and brake warning lights came on anyone have an idea what would cause ths Thanks in advance for any help

 

i had the same problem with my truck. its a 98 also. when the abs and parking brake lights both come on it means either a faulty speed sensor or a bad abs unit. if the speedo is also affected then it is most likely the speed sensor. the speed sensor on my truck cost me about 150 installed.