Tell me how you would personally ground a headunit. Way to save settings losing power
1) Is there any trick you have up your sleeves to where I can save the settings on my Kenwood DDX470 when I unhook the harness and wires from it when I remove it for this rewire? It has a feature to SAVE your settings to memory -- Does this memory stay without power by chance where I can reload it when I repower it? Or if not, is there any trick to keep the settings on the headunit when pulling it out? I have it dialed in just right, and it's a ton of settings.. I'd really like to be able to keep my audio settings mainly.
Maybe not,.. doesn't hurt to ask.
2) (Grounding) I have a Kenwood DDX470 -- and I"m about to install a reverse camera, and some other things.. while I have it out I'm going to run a direct ground from the ground wire out of the harness to the car somewhere. As the ground from the factory harness doesn't go anywhere (ironically).
I've heard people say as simple as just run it to the headunit brackets , screw it in.. and that's it.
I've heard as complicated as isolate it and send the ground to a relay.. Wiring in Ignition wire to 86 terminal, 12v ignition to terminal 30 on relay,.. Yellow 12v constant from battery (factory harness) to terminal 87,.. and Wire a NEW run ground to the FLOOR of the car chassis to terminal 85,.. and split off this ground to the headunit ground wire on harness.
Then any variation in between.
I don't have a problem doing any of this.
Just curious how YOU would do it.. Would you just run a ground literally a few inches to the brackets/chassis of the headunit? Would you run a ground the floor of the car somewhere?
Would you go so far as to wiring in a relay to it?
I'm kind of in the middle.. To run a ground down low to a good bolt somewhere on the floor below the headunit, or kickpanel areas (somewhere I can find a good bolt).. and that be that... and not go to the hassle of wiring in a relay.
I'm about to pull the headunit and do it.. so your thoughts would be appreciated.
While I'm at it.. I am doing a few other wiring things here -- I originally just wired in power, ground, and remote to the kenwood.. but it has an Illumination wire,.. and some other wires that I know can be wired into the factory harness --
I'll find a wiring diagram of the factory harness so I can match up wires for these things -- but someone on a 350z forum mentioned that there is a wire that goes to the Antenna amplifier (these cars don't have power antennas.. but apparently there is an antenna amplifier) -- That true, make sense?
Vehicle: 2008 350Z
Headunit: Kenwood DDX-470 - Front Stage: JBL 6.5" MS62C Components - Rear: (1998 German) MB Quart 6.5" QM-160-KX - Sub: SRQ Custom Enclosure with JL Audio 10" W0v3-4 @ 300w RMS - Amp: 5-Channel PPI 900.5 - Wiring: KnuKonceptz 4g Power/Ground + 3 Sets Twisted Pair RCA's - 14g Speaker wire - NVX + Rattletrap Extreme Sound Dampner (30Sq ft.) Throughout - Extras: Rear/Reverse Camera - KCA-iP-202 w/ Garmin Navigation Integrated with Touchscreen.