New 12 volt, no lights, no jump start, need help

Thank you, that was not there to begin with. I wonder if I can replace?

 

Yes I have the main black fuse box cover. The car was not used without cover installed. It’s doesn’t fit perfectly and is a bit difficult to get out I believe because of the minor front end accident early on in cars life (hood doesn’t sit perfectly) but it goes on and all clips latch. I’ll take pic tomorrow.

 

I left the 12 V plugged in over night after installing the new fusible link box. I tried to start it in the morning and only got a few lights on the dash. I went and bought fuses and spray and was planning to get started on all those in the afternoon. I tried Starting it before that and it started right up. I have been driving it for two days now. I ended up not changing any other fuses but did spray some cleaner in there and made sure to get the black cover secured. I am thinking about putting some foam insulation on the edge of the hood to help stop water from getting in. I think that could be what happened here. Otherwise I still need to patch the leak on the trunk to keep water off of the 12 volt and I believe I am good to go. Confidence restored and I’m ready for another 150,000 miles. I know A LOT more about the Prius now and am happy that I came here for help. Thanks to ALL for your help. I can’t imagine how much money was saved. I spent $83 on the fusible link, $10 voltmeter, .60 for the bolts I broke on the old fusible link (very small and hard to find but NAPA is good at unique parts) also note I recently changed the 12v to the 150 group battery which cost me $150 for the battery and $16 for the larger positive adapter and $8 for the new ground cable. Thanks again!

 

P.S. I felt confident enough to remove the blue Also cleaner at Walmart is $6