I have an ’84 528e that will not start when it is hot outside. When it is moderate to cool outside it starts on the first. When it is hot the lights in the car comes on but the starter is not turning. I thought it might be the ignition relay but my Hyanes manual does not tell me where that reley is so I have not been able to replace it. Does anyone know where it goes? My friend thought it might be the solenoid. I have a new battery. Any suggestions would be appreciated. Thanks!