Re: no fire
1) yes it DOES matter and yes they are color coded, I forget the color code but it is the same as the opposite side, I think the one with the small green stripe is top. the other stripe is middle and no stripe is bottom, but make sure to check you other power pack for confirmation.
2) the 150 GTs were great motors and if it is not dilapidated is well worth repairing. I gave you a web site that has a free easy to follow guide on how to test your motors electronics. you will need to buy a $25 DVA adapter and I assume you already have a multi meter if not they are about $20. I highly suggest you get these tools and follow the guide and find out what is wrong with your motor. even though you probably just got your coil wires crossed it is also possible that you have other electronic issues, just because your motor runs does not mean all is well. So it is cheap and easy to properly diagnose your motors electronics and I strongly suggest you step up to the plate and geter done. you will have a much more positive experience with your boating.