Long time Ago I wanted to install a Stereo CD Player + Radio unit on both my Subaru Wagons, the ER27 (H6 2.7) and the EA82 ("BumbleBeast") and, since the Newer Stereo Units are Larger than the Old Ones, they'll come outside around one or two inches from the Dash, Also they will Stay Directly in front very near of the Shifter Knob, and that is a Problem, especially when shifting fast to third gear.
So, I did This Idea:
it is a Wooden Frame, Cutted in a 45º Angle to make the Look of a Original Mounting, in that Way, nobody notices the 2 inches elongation outside the dashboard. I Painted it to mate the Dashboard's Original Colour.
And I did Cut Down the Shifter Too! ... ... Not only for the Looks, it has many advantages, like shorter shifting travels, but the main reason was to Avoid Hitting the Stereo Unit while doin' a "Fast & Furious" kind of Shifting, especially to Third Gear ... ... also to Avoid Hitting the Passenger's Knee ... ...
I Was About to Finish a Drawing explaining the Wiring Diagram, because I changed the Stock plug and added a Custom Plug while separated the Speakers' ground (Newer units needs fully independent wires) but I Found that the wiring is already very Good Explained here, in this same section of the USMB by another member, so I only will tell you this tips:
Don't forget the Shared Ground for Both Left Speakers, and the Other Side's Shared ground for both Right Speakers; you must rewire them to independent ground on each Speaker, in order to avoid problems with the built-in Amplifier.
As far as I know, each Speaker comes wired independently from factory, but there is a place behind the Glove Box, on the Wiring Harness, where the Factory merged the Grounds for each side. You can track down the point and rewire the part from the New Stereo's Plug to the Wiring Harness.
Edited by Loyale 2.7 Turbo, 05 May 2014 - 09:12 PM.