amlmustang

Im building my car from scratch. Started with a shell and some interior. It was originally a 4 banger. I also have a 89 5.0 that im stripping down and using for parts for my new one. Im taking the motor and all the wiring out of it and putting it in the the other car. Everything has been going great until I hit a road block. The 89 was an automatic but I bought a t5 for the new car. Here is the problem. I was told that I am going to need a t5 reverse light harness in order for it to work since the aod harness is different. I cant find this harness anywhere. Please tell me somebody out there knows where i can find one because I have been searching for weeks. Any info would help. Thanks