If permanently wiring in charger cables perhaps best pay heed to Dave W`s suggestion.. for a fuse on the positive cable as close to the battery terminal as possible in order to avoid the lightweight charging cables becoming a fire hazard by glowing white hot along their length should they short out under a carpet or elsewhere for any reason, be the charger in use or when out on the road. I think there has been an example of something similar causing burning to trim on the forum recently..?
