Thank you so much for this informative thread, star2. Alot of my questions regarding my swap have been answered!
Please have a look at my thread.
I swapped a GA15DE engine in my B13 as well. I bought the engine with 'UNCUT' wiring and ECU. But I was soon to realize that many of the wires coming out of the ECU were not connected. It all started when the engine would stall whenever I turned on the A/C. I went through your thread and learned so much. I haven't currently connected the AC and Fan Switch wires, but I have the found out a jugaar way to turn on the FICD Solenoid whenever I turn on the AC.
Anyway, all this got me curious and I was getting scared that my ECU might not be getting all the information of the car it wanted. So I stripped the wire harness and found some 12-14 wires left unattended! :@
I need help wiring everything up. I have used the Pulsar N15 FSM for the engine and Wiring diagrams of B13 to see which wire is for what.
Right now my priority is to connect the Pin 32 to the instrument cluster speedo! The ECU doesn't know what is the vehicle speed!
Starting from left:
Black/Pink Wire: Pin 104 Fuel Pump Relay
White/Green Wire: Pin 4 ECM Relay
Green/Black/Pink Dot Wire: Pin 7 Check Conn
Green/Pink Dot Wire: Pin 10 Radiator Fan Sub Relay
Dark Green: Pin 11 A/C Relay
Green/White: Pin14 Check Conn
White/Light Blue Wire: Pin15 Check Conn
Green Wire: Pin 23 Check Conn
Pink/Red: Pin32 Instrument Cluster Speedo
Red Thick Wire: Pin 33 Fuse D
Black/Yellow Wire: Pin 34 Fuse N
Green/Brown/Pink Dot Wire: Pin 35 Neutral Switch
Light Green/Pink Dot: 41 Dual Pressure Switch
Pink/White: Pin 43 Power Steering Oil Pressure Switch
Red/Blue/Pink Dot: Pin 44 Fan Switch?
Green/Black/Pink Dot: Pin 45 Fan Switch?
White/Blue Wire: Pin 46 ECM Relay
Check Conn is probably the connector that goes to the diagnostics module that I guess only Nissan dealers have? There is No ECM/ECU relay in my car. I don't know how the electrician went round that. Also, since my car was a diesel, it had a instrument cluster without the tachometer. So I bought one with a tachometer and wired it up myself. Pin 2 of ECU goes to the Tach.
Here is the Old instrument cluster:
What I am really having problem with is the speedo. Speedo works, but don't know where to connect pin 32 of the ECU to?