Best location for 12v switched?

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EL5DEMON340

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Is the fuse box 12v acc terminal the best spot to pull 12v switched from ? I have pulled most of my wiring apart and have moved my batt to the engine compartment, added aftermarket tach, rebuilt engine harness etc, etc .. but I need 12v switched for tach,MSD, denso alt, and aftermarket gauges. The terminal on the far right is the 12v switched acc correct?

IMG_6379.jpeg
 

Looks like a lot of add ons already you might want to consider adding another fuse/relay panel for any more.
On the far left (instrument lighting) I added a couple wires for the aftermarket gauge and ash tray light. But that may be a good way to go,
 
for under the hood, I took the keyed side of the ballast resistor into a a small fuse block which in turn powers the electric choke. Could be used for your spark box as well.
 
You need to come off the ignition switch IGN1, cut that, feed the switch end to trigger a relay, feed the relay power from a solid new fused source, or after you've bypassed the ammeter. There are a number of reasons for this. Wire is too small, the bulkhead connector has problems, not enough fuse protection for individual circuits, and the switch itself IS ALREADY over taxed

VOLTAGE DROP in the primary power distro and the switch circuit to the ignition IS THE BIGGEST CAUSE of over charging by the charging system
 
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