!!!--need Help With My Engine Swap--!!!

[snappy]

About a year ago I did an engine swap out of my 90 240sx, with a 95 240sx engine. As you probably already know some of the wires don't plug in, so some splicing of wires from the 90 and the 95 wire harnesses were needed and now it's a total mess. I still have the old engine, but I would rather keep the 95 engine and get my car running. Any advice is welcomed, and if anybody has been in this situation or can fix this problem I would be more than happy to pay the person to get my car running. It's a great car and I don't want it to go to waste. I live in NORTHERN CALIFORNIA near STOCKTON. Please Help!!!