Early Radio Wire Connections 9-70

[240260280]

Just took these today and now they are helping a friend. Thought I'd share

 

Figure 1 is from the 240z schematics. The schematics are more or less logical connections and do not show connector details.   It shows the power, ground, antenna and back light wiring to the radio.

(figure 1)

 

The FSM gives details of the connector from the body wiring harness  (from the back of the car). Figure 2 shows the 3 pin  Molex-type connector.  It has the two speaker wires (white and white with black stripe) and one back light power (blue).

(figure 2)

 

 

The photo below shows the corresponding connections on the radio unit.  The molex connector has 3 male pins carrying the backlight signal(blue with red stripe) and the speaker signals (white and white with black stripe). A separate wire (red with blue stripe) carries the power. The power cable has a male bullet connector. The radio case is grounded to the metal brackets holding it. A ground wire from the small harness to the heater and fan unit has a ground wire that secures to the driver's side of the radio mounting screw (round head Philips)

 

The photo below shows the wiring harness where the radio connects. The power connects to a female bullet pigtail (blue) of an inline fuse.  The 3 pin molex has a female counterpart in the harness.

 

Below is where the ground wire attaches (on driver's side of radio)

 

 

Below is photo showing the extracted radio and heater harness mock-up.  On the 9-70z, the heater harness has the ground wire to the radio.

 

Edited June 17, 2019 by 240260280