could it be the wiper motor

[Doc90]

my wipers only work on hi or low the intervals dont work could this be the motor?

 

[bill302]

you need a new Windshield Wiper/Washer Governor... click on link below for description
http://www.mustangsunlimited.com/itemdy00.asp?T1=SW2038+01

 

[Saleen0679]

See if you have the same symptoms as:
http://www.corral.net/forums/showthread.php?t=786873