20-08-2018, 02:26 PM
They sit next to a hole in the wheel arch getting sprayed with water, the failure is fairly inevitable imo. There's a lot of current that flows through that relay, a poor connection as a result of corrosion causes high resistance so you get a lot of heat generated, which in turn melts the plug and surrounding wiring.
It is a pig of a job to repair, most of them have the back of plug covered in resin so you either need to cut that off very carefully or use a tester to work out which wire matches each pin before you can repair it.
It is a pig of a job to repair, most of them have the back of plug covered in resin so you either need to cut that off very carefully or use a tester to work out which wire matches each pin before you can repair it.