Need help with hard wiring a battery into our caravan

Thank you so much Derek....

This a query rather than a statement and Derek or someone may confirm it for myself (and others).

I believe running twin (Battery and Earth) to all stuff in a Caravan / Camper Trailer / whatever (so that all earths come back to the battery point) is to avoid electrolysis due to different metals used in the chassis of them.

However in a vehicle it is OK to earth stuff at various earth points on the chassis because they are all the same material (under normal circumstances).

Ken

Hi Ken

I use earth returns because of rust, paint, wood and other insulating materials.

I would not worry about electrolytic or galvanic corrosion of metals on a caravan, boats are more prone to this problem.

Here is a link for you: EL-Corrosion

On vehicles I find chassis earths very good and am happy to use a good clean chassis earth. Others swear by a earth return on vehicles but it is almost impossible to run earth returns for every accessory on a vehicle, we tend to create a earth stud in the common areas and earth accessories back to that point. (See below)



Regards

Derek

I just finished( bout 2 hrs ago) semi rewiring 12 system in my poptop, so that i had a fuse block both for isolation purposes and for protection. With the earth return side i wired everything possible back to a common earth point to which the earth return of battery was connected. Only problem i came across was, that i found all my 12 v LED's still worked even with all the fuses out(incl the battery).So now i have to investigate how previous owner attache the said battery leads hahaha. Each of my visible connections was done one at a time to avoid any problems. Just letting you know ANDREA11 so that you make sure you dont get caught the same way.