It can be. I had this happen on a polo and the hazard switch was the fix. Have you no manual or reference guide maybe someone here can confirm.

Found this on ebay looks like it's built onto the indicator stalk alright. http://www.ebay.com/itm/FORD-ESCORT-...-/311307194176

Check the metal prongs on the relays the 2 white ones, the control the indicators.