i have a 2008 f350 powerstroke I done an engine swap and trying to hook everything back up and I have a battery lead that I don't know where it goes and cant find a diagram for it it comes off of the passenger side battery and has a positive and a negative wire together into a set of eyelets that are inside a boot the eyelets are about 2 inches apart cables are maybe 4 ft long if someone could tell me where they go it would be greatly appreciated