All ActivityMost RecentMost LikesSolutionsauxiliary battery for new gmc pickuphas anyone added a second battery to their new gmc pickup. my truck came with a second location for a battery but the manual details are not clear on what to do about wiring in the battery so that it is independent of the starting battery but still will be charged by the altenator. the heavy duty package was supposed to allow adding this second battery. your help would be most appreciated.
GroupsTravel Trailer Group Prefer to camp in a travel trailer? You're not alone.Jan 21, 202544,030 Posts
