Considered taking an angle grinder to it over coming bank holiday and cutting it into little pieces.
Sorry, that should have been ELD (Electronic Load Detector) - https://www.dormanproducts.com/p-77014-601-019.aspx - this kind of thing. Responsible for managing load on the battery and managing the alternator if I remember correctly.
Ok, this has me thinking now. What are the symptoms of the ELD failing?
booked in Jessie for ecu and mapping ,on the look out now for big brake kit