I have a 2013 and I tow the car. Honda manual recommends that I pull the #19 fuse under the dash, for long day towing. I set up a switch for that fuse, but if that fuse is shut off, the accessory/lighter sockets are also shut off. I need power to one of the accessory sockets with the key on acc.
The #19 fuse forth over from the left on the fuse box ( row two down ) is rated at 7.5 amp and labeled ACC.
Is there a relay I can jump out or another socket that will work only on acc I can rewire the socket to?
Or am I better off just installing another socket direct to battery?

Another related question: Is there anywhere I can see electrical diagrams without buying the service manual?

 

If it was me, I would just wire up a second outlet.