Well, I did the update this weekend and included the resistor as I had one in my junk box @ 4.5Ohm anyhow and resistors are cheap!
Anyhow, works like a champ...
No sound while Car is on, I used ACC\ON in fuse block next to Batt (PWM circuit I think \ only on when car is fully powered up.)
But when car is off... all charge and unlock beeps can still be heard. also no warning lights and this does not affect any other sounds. Only the VSP forward motion sounds and the reverse beeps are gone.
Very Quiet now!!
I put resistor inside of the Speaker case and only modified the speaker box for 3 extra wires out so it's an easy replace should I need to return back to stock.
A Pic of the assembled unit with Relay attached.
Back of speaker showing Relay attached... only three wires out of speaker box I even pick up Ground from the bracket that holds the speaker itself leaving only one wire to the fuseblock to enable this VSP cutout.
Works like a champ!
GlennD, thanks for your responses and help... the relay clicks instantly before the VSP module wakes up so when the module interrogates for the speaker at car start up, it sees the resistor first. I think I will add a switch to the ACC\ON trigger to enable or disable the cutout manually should I ever want to turn it on quick.
Tinted 2013 Silver SV 6kwChg, Hella Horns, All-SuperBrightLED's, Switchable VSP Relay Cutout, LeafDD
Self installed BOSCH Power Max Level 2 Charging Station.