where is the overload protection relay

[martyyyy]

my 92' 190e benzo is ill, she doesn't want to start, the abs light is on, the stereo turns off when it gets to loud, or I open the sunroof, all signs point to this Overload Protection Relay, Does that sound right, Ive replaced the cold start, fuel filter, and fuel regulator. If there is a benzo doc around please tell me if this diagnosis sounds creditable, and where this OVP monster is located, thanks, Martyyyy