voltage drop after running the big 3

[profundus-sanus]

did you charge the d3100 before you put it in? voltage could be low because its charging up the battery.

something would have to be consuming a fair ammount of electricity for your voltage to just be lower like that. I doubt its a bad connection anywhere though.

[BkSmiff]

I just ran a big 3 in my 2017 gmc Arcadia not Not sure if everything is running well

alt+battery 

Engine-battery 

Battery-frame 

min top of all the the factory Cables