1996 Isuzu Rodeo v6 4x4 major oil leakhole in the bottom of motor can anyone identify this part of the motor

 

ok so this is my brothers truck and he knows nothing about autos i posted this before i went to actually look at the truck now i can give a more accurate description of what the truck is doing i removed the skid plates and sheilds on the bottom of the motor and i could see fresh oil but couldnt tell where it is coming from as it was not activly leaking (he could have just spilled a lot when filling it up) are there oil cooler lines that may have a leak in them? oil pan gasket? the other thing is that when it is running it makes a noticable tick/knocking noise as if it were low on oil and the tach and speedo show 0 when running the lights are really dim and almost kill the truck when i turn them on radio shuts off climate control unit shuts off sooooo what do we have here a bad ground? bad wiring? bad battery?bad computer? where should i start?

 

anyone??? this truck may be for sale soon and i will post pics would be nice if we could repair it but i dont have the time and he dosent have the money could be an easy fix? mabey mabey not IDK

 

about your electrical problem i would remove the battery and check the charge and if thats good then i would check the alternator