So im thinking about just running a dedicated power wire to the battery for my seats then I got to thinking my amp is already wired to the battery and its pretty much in the vicinity of the drivers seat and its fused with a 15 amp? I think anyways. Now for the question my and power wire is 4ga my seat wires are 12ga( just a guess) is there a way to steal power from my amp wire being the different sizes? Or should I just run a new wire its just a PITA to go through the grommet in the firewall.
I bought 25' of yellow 12ga wire (yellow because every time I do a stereo yellow is 12+) some ringed connections a fuse-able link and 30a fuses. I ran the yellow wire from the battery back towards the coolant reservior and across the engine and through the grommet on the drivers side and cut way more than enough wire to reach the drivers side seat. I had all the factory plugs that went to the seat and snipped more than enough of the passenger harness to reach over to the drivers seat I took advantage of the factory ground point under the drivers seat. From there I hooked up the battery wire to the red wire, the fuseable link went to the battery side and i hooked the yellow wire up from there. Cost me 18$ lol. Both power seats now work as it was from factory now.
It was super easy to do and took about 2 hrs but I was not in a rush hardest part was pushing the wire through the grommet.
Its not very safe tapping into wires especially when that tapped into circuit was only supposed to handle so much current and I feel much better about going to the battery, and every other vehicle I have been in the power seats had power when the key is off.