We have designed a mock up based on the terminator x max Ecu for making electronics shelves and wiring vehicles. This are 3d printed from plastic so u can also weld on a vehicle with one connected. There are almost an exact copy on the ECU for mounting point and connector locations. you can use these instead of damaging an expensive ECU. All of them are printed for extremely bright colors to prevent them from being lost in the sea of black parts around your shop.