To keep the ammeter functional NOTHING can be tapped into the line between the battery & the ammeter (including starter relay batt stud) cuz if you do you would be takeing current out of the battery without it showing on the ammeter as the ammeter strickly shows current going past the ammeter that is going into or out of the battery so you are cheating the gauge reading. #1 #1 #1 do Nachos bulkhead parallel bypass on the 2 main in/out heavy current wires & leave several inches of those 2 wires behind the bulkhead so if you have to seperate the bulkhead again, pulling the front half forward you can do so (clean all bulkhead terminals when you are in there). With this done you can add your switched draws to the alt batt stud (relay high current ones that have larger wires so you ain't running alot of large wires everywhere) or under the hood (depending on where your devices are located) between the ammeter downstream to the bulkhead (& actually between the "welded splice" where the wires down stream from the ammeter between it & the bulkhead T off to power the fuses/horn/column etc as is a bit better as it is slightly closer to the alt & you're going thru less "connections/terminals" tho a moot point if ALL terminals/connections are cleaned & have minimal voltage drops. EDIT short version: Do Nachos bypass/clean all terminals & connections/add or relay devices to alt or down stream from the welded splice. MORE EDIT I reread & yes you can run from the alt to a distribution block & use it as your power take off. the alt is the power source so as close to that as possible is a good plan