Thank you for your purchase from etrailer of the Curt Circuit Protected Converter w/ SMT # C56175.
If the tail lights on your Volvo act as both the turn signals and the brake lights, you would have a combined system, and yes, you have it correct. I suspect this is exactly what you have though I was unable to verify the type of system on a 1988 Volvo 240. If you do not have a combined system and the lights and turn signals are on different lights, then you have it miswired and would need... view full answer...
For your 1991 Volvo 240, there is only one hitch available and it is not a Class III. This is most likely due to the vehicle weight capacities given by the manufacturer that would limit the hitch capacity. I know you were specifically looking for that 2 inch receiver, but the Class II with the 1-1/4 inch receiver is all that is available as a fit. If you want a trailer hitch receiver on this vehicle, you will want the Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" # C12207... view full answer...
According to Curt, the # C12207 Class II hitch fits all models of the 1993 Volvo 240, including the wagon.
If you'll be towing with the hitch, you'll need a trailer wiring harness # 119178KIT, a ball mount # C45521, and a # A-80 for a 1-7/8 inch trailer ball or # A-82 for a 2 inch ball. view full answer...