Question 1: Once I identify my remote trigger wire from the after-market head unit, can you run that (split it?) remote trigger wire to two amps? The goal is to have the amps turn on/off when the head unit is turned on/off.
Yes, should work fine. I have done this in the past.
Question 2: Is the OEM remote backup camera at all tied into the OEM radio?
No, but when messing with wires make 100% sure you know what is what before cutting anything. I accidentally cut the wire to my map lights when disabling the headliner exciter POS thingies and had to splice and heat shrink it. To make life easier, try to use aftermarket wiring harness adapters wherever possible.
Question 3: I am assuming that you still run the power directly to the battery from the amp when using a trigger wire as the on/off. Is this correct?
Yes. My https://www.fjcruiserforums.com/forum...dio-mod-3.html
single small amp wiring setup:
4 AWG Monster Cable battery terminal connector attached to 4 AWG power wire.
4 AWG power wire routed from battery to fused distribution block under hood. (see pic)
8 AWG power wire routed from distribution block to head end unit.
8 AWG power wire routed from distribution block to underneath driver seat for sub amp.
8 AWG ground wire attached to driver seat bolt for sub amp. (see pic)
8 AWG power and ground connected to amp with Rockford Fosgate platinum coated spade lugs
For multiple higher powered amps, you will want at least 4 AWG wired all the way through for power and ground to your amplifiers.
2011 Iceberg 4x2 w/Toyota Bilstein offroad 4x4 suspension swap, Toytec driver side level spacer, Energy Suspension sway bar bushings, HŁper Optik tint, 2011 audio mod
, full undercoating, tow hitch, N-FAB step bars, Hunter 'roo bar, .50 caliber machine gun for urban assault
Oops, I just ran over another Prius. I thought it was a speed bump. Oh well. They should have bought an FJ.