[chicobrent]

Hi, I just got a new battery for my RV. A friend took out the old battery and I was getting ready to put the new battery in but unsure of what wires go where. I've googled it and see sometimes black is pos and saw a red and black on a neg post in one picture.

I have two red wires one black and one white. I checked all with a multimeter and only one RED wire shows amps. I can see the white is ground because bolted to frame. the other red and black wire go through the firewall area and I can not trace. Any help is appreciated. Thank you