Personally I have used Vasaline petroleum jelly on my battery cable
connections for many years with no problems
what causes the battery light to on a 2005 ford expedition to come on?
To replace the battery cable on a 2004 Ford Expedition, first, disconnect the negative battery terminal using a wrench to loosen the bolt. Then, remove the positive terminal in the same manner. Next, detach the old battery cable from the battery and any connection points, such as the starter or ground. Finally, install the new cable by reversing the steps, ensuring all connections are tight and secure.
a 1999 ford experdition battery
battery
Disconnect and remove the battery. Cut off the spoiled terminal and replace. Replace battery. Reconnect.
Relay # 302 is the trailer tow battery charge relay in a 2002 Ford Expedition
sure connect the positive terminal directly to the booster battery and the negative battery terminal to the body
Are there issues with the electronics?
Group 65.
The battery isn't being charged
Yes
disconnect negative battery cable