Both of my battery cables are black. What do I need to do to replace them

both cables are black.they are the same length,same part number.don't unhook the battery with the van running.if you have never changed a battery in that year vehicle,it's gonna take 30-45 minutes the first time.

It's basically a non serviceable VEHICLE by design!

repl positive with red and keep neg black.are they in good shape? if so no need to repl