MX-3.com

I just had to swap out my v6-94 to a v6-93. when all was said and done we went to fire it up and it turned over a few times but it stopped! then all the front and back lights would not shut off ??? till I disconnected the terminals! any ideas on what happened?
Thanks Dan.

Is your car OBD I or OBD II?
Sounds like you have a short, but I don't see how you messed up the body harness (head and tail lights) with an engine replacement (should all be engine harness which is not connected to the body harness). the only part of the engine that is connected to the body harness that I remember is the reverse light switch on the tranny. Which brings up another ?. Do you have a auto or manual trans?

I have an automatic and the engine came from a standard 5 speed!

You still didn't answer about the OBD model. Is it OBD1 or OBD2?
If your car was an auto before and is still an auto you still shouldn't have any problems, but start by replying about the OBD. I don't know enough about auto MX-3s to know if they even have a nuetral or reverse swtich on the trans. It might all be on the shifter. Have you checked for blown fuses or any fuse that might not be blown, but looks dark. Make sure all your fuses are the right size and that someone didn't use a larger fuse than should be in any certain spot.

the OBD is OBD1, the fuses look good, engine came from a 93 manual and now is a 94 automatic, still having fun rebuilding this car! hope you can help!