The OVP Relay mentioned in this thread definitely affects how the car runs. My question is where to find the correct replacement relay. The one in my car is the Mercedes part 2015403245 with 7 pins. When I search Pelican Parts or any other for my car and this part all that is returned is the 9 pin part number 2015403745. Are these compatible or will replacing mine with a 9 pin fry something in the electrical system?