S13Ka into S14 body harness trouble

[supracrazy12]

Hi I'm in the process of putting a stock motor back in my s14. The only thing is that it is a s13 motor and harness.The harness has 2 big clips one for the ecu and another for I'm guessing, the body harness. Here's the thing, the one that is on the s13 harness wont slid into the s14 I remember a long time ago when i took the original motor that was in the car it had a white clip. the s13 harness has a brown one and it is a lot smaller then the S14's

How can I use the s13 engine harness in my s14? Can it work or will I have to find a s14 engine harness.

Thanks Josh