So I posted some questions in the urgent section and did not get any replies so I will post my question here to see if anyone knows. I'm pretty convinced that the main relay on my car is dead again after my soldering job last year. My question is that when you go to buy one, the part number they're calling for is an RZ-0159. I went to the local pick apart this morning and found two different six-cylinder accords but they were four-door and when I pulled the main relay they are both RZ-0158. They were 2001's. Does anyone know the difference between the 58 and 59? The pins and everything appear to be the same...the housing is bigger though. Thanks for any help.