Wiring diagrams for the Z32 300ZX audio / stereo system Mar 18, 2012Tracking a stereo issue in your Nissan 300ZX can be a challenge - Here's a detailed diagram of the wiring for the head unit and speakers on most Z32 models. NICOclub The Nissan and Infiniti enthusiast community - Repairs, 1986 Nissan 300ZX | Stereo Wiring Diagram Apr 01, 20211986 Nissan 300ZX Stereo Wiring Information. Radio Battery Constant 12v+ Wire: Red/Black. Radio Accessory Switched 12v+ Wire: Blue. Radio Ground Wire: Chassis. Radio Illumination Wire: Red/Yellow. Stereo Antenna Trigger Wire: Green/Black. Left Front Speaker Positive Wire (+): Blue/White. Left Front Speaker Negative Wire (-): Blue/Yellow. 85 300ZX Stereo Wiring | The Nissan Club Feb 25, 202085 300ZX Stereo Wiring. Jump to Latest Follow 1 - 8 of 8 Posts. W. Whampking · Registered. Joined Feb 24, 2020 · 4 Posts . Discussion Starter • #1 • Feb 24, 2020. Does anybody have a wiring schematic/diagram for a 1985 Z (with external amp)?