I got the AEM look alike from Pro1 and it didnt come with instruction so I just install it while looking thru pics on this website. As I was removing the wires for the wheels speed and another big one I kinda damage the plastic housing on the big one so I took it off and tape them up with electrical tape.
Why is that part of wires been cover up by the winding plastic housing? Doe it serve a specific purpose? Thx.

 

I don't know if you used the AEM Installation Guide that I posted, but was it the "blue" connector in picture 2H or the "big black wiring harness" in picture 3F? In my opinion I don't think it would matter, but better wait for a "professional" opinion.

 

Its the one in 3F, just that its taped up on both end but in the middle they are cover up in the plastic housing so makes me wondering about it. Yes I did use ur guide and it was very helpful so thx alot.

 

Its purpose is to protect the wires and provide a secure path for the cables. The 350 has similar cable trays throughout for ease of factory installation.