Hi,
Yeah it's only for test purposes

In fact, I'm using a distribution block from StreetWires right now, which is fuse protected (as well as the M1-ATX, it has a 10A fuse) and works really nice
For the ACC and Ground wires, I just used electrical tape. It's rainy today so I can't show you how it looks like, but I'm going to take some pictures as soon as it gets dry (so water won't go in my progressing trunk install

)
For the monitor, I've received it yesterday and it's a little bigger than what I've expected and like you said, it will be a little bit too low behind the two small covers. I might fix it temporarily (with a removable connector or something like this) in front of the HVAC when I need it, but right now it's in the glove box

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Via Epia M10000 / 512 DDR / 10gigs 3.5 HD / M1-ATX / Innovatek 7" TS Screen
Trunk fiberglassing in progress...
Need GPS / Aux Input / WiFi
My Corolla Computer