Mod Description
I have always wondered about the miriad of connections on the back of the Highline stereo.Mod Details
PremiumYes Difficulty
Mod ID900
Creditevilution
For
Linkhttps://www.evilution.co.uk/mod/highline-what-it-could-have-been.htm Copy to ClipboardStandard Connections
Smart only documented the 3 main connections for the Bosch Highline stereo.
| Pin Number | Wire Colour | Connection |
| A1 | Brown Black | Parking Switch for DVD (Highline) |
| A2 | No Connection | |
| A3 | No Connection | |
| A4 | Red Blue | 12v Permanent Live |
| A5 | Black | 12v Remote out |
| A6 | Grey Blue | Lighting Input Speedo pin 12 |
| A7 | Black Grey | 12v Switched |
| A8 | Brown | Earth |
| B1 | Blue | Right : Dash Tweeter +, Sub pin5, Rear + |
| B2 | Brown Blue | Right : Dash Tweeter -, Sub pin2, Rear – |
| B3 | Pink | Door Right : Speaker & Tweeter + |
| B4 | Brown Pink | Door Right : Speaker & Tweeter – |
| B5 | Violet | Door Left : Speaker & Tweeter +, Sub pin4 |
| B6 | Brown Violet | Door Left : Speaker & Tweeter -, Sub pin1 |
| B7 | Yellow | Left : Dash Tweeter +, Left Rear + |
| B8 | Brown Yellow | Left : Dash Tweeter -, Left Rear – |
| C1 | Pre-amplified Out Left Rear (Highline) | |
| C2 | Pre-amplified Out Right Rear (Highline) | |
| C3 | Audio Earth (Highline) | |
| C4 | Pre-amplified Out Left Front (Highline) | |
| C5 | Pre-amplified Out Right Front (Highline) | |
| C6 | REM Switched Live (Highline) | |
| C18 | Line Ground | |
| C19 | Line In Left | |
| C20 | Line In Right |
Smart weren’t even aware of the pre-amplified outputs found at C1 to C6.
It was only because I was testing all of the connections for earthing, voltage or a signal that I found them.
A Lot Of Connections!
The main undocumented connection on the rear of the Bosch Highline is the vertical 10 pin connector. It must do something, it can’t be there for no reason can it? Wrong, you underestimate smart.
I managed (after 2 years of trying) to get an official pin-out diagram for the Highline stereo. After testing all of the connections with an oscilloscope and multimeter I got back in touch with Bosch. Mainly because their official pin-out diagram was wrong, very wrong.