Two fuses keep blowing

Hello, I have the ES model.

I have two fuses that keep blowing on me. The first one is fuse number 13 in the engine compartment. It is the engine control fuse. I have tested everything by removing the MFI relay, and unplugging everything connected to that relay. When I plug different components back in, none of them would cause the fuse to pop. I decided to tug on the nearby wires and surely I found a location where if I push down on the harness, it will blow the fuse. It is the area of the harness right above the thermostat housing, covered in plastic. I have seen one post where if the plastic mount breaks, the harness can move and cause wires to rub on each other and cause the short. My current temporary solution that has been working so far is I took zip ties to keep the harness up by tying the zip tie around the harness and around the air intake hose. It seems to be working fine but how can I fix this permanently?

The second fuse blowing is an odd one. It is in the fuse box on the driver side door and it is the 10 amp reverse light fuse. This fuse only blows when I put the gear selector in the "2" position. When this fuse blows, the engine light comes on as well as the SRS light, and the transmission enters limp mode. The codes that come up from the engine light are typically the range sensor circuit, as well as the input and output shaft speed sensor circuits. I have replaced all three of these from parts at a junkyard. Perhaps new parts may help instead of used? I am at a loss because I am not very good at diagnosing electrical and wiring problems on cars.

I apologize for the lengthy post. All help will be greatly appreciated! Thank you so much!