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Needed: Interior harness schematic or wiring diagram for 1g and HELP!!!

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kronus

20+ Year Contributor
652
27
Jan 15, 2006
Independence, Missouri
I'm in the middle of my 4g37 to 4g63t swap and I've run into a HUGE snag with the engine harness.

At the ECU location, there are 5 plugs on both the 2.0 harness and the 1.8 harness. 3 of these are yellow ecu connections, 1 is a fuel pump relay connection, and the third is the interior harness connection.

*NOTE* The 1.8 side is a MANUALl harness, and the 2.0T side is an AUTOMATIC Harness. And I have verified that the 2.0T harness is 91-94. Also, the car is a '93.

On the 1.8 side of things, the interior harness plug is a 14 pin connector with only 9 filled pins. The 2.0 side however has a 18 pin connector with 16 filled pins. I was under the impression that I could just splice over the wires from the 1.8 side to the 2.0 side if I matched colors.

Well I did that, and it left me with 7 unused wires, and now I only get power to the dash dummy lights, the windshield wiper and sprayer, the horn, and the light inside the A/C switch. So apparently I can't rely on just the colors.

Here are the wires I spliced over.

On the interior side (manual):
Black
Blue w/ Red Stripe
Yellow
White
Red w/ Green Stripe
Green
Red w/ Black Stripe w/ Silver Dash
Red w/ Black Stripe

Now using some info I've found on the Engine Harness Side (Auto):

Pin 2 Yellow w/ white = "Power" mode from AT switch (shouldnt need)
Pin 3 Brown = accelerator "on/off" switch (shouldnt need)
Pin 4 Red w/ white = runs between CC computer and trans computer (shouldnt need)
pin 5? Red w/ green stripe = check engine light
Pin 6 Red w/ black = AC clutch relay
Pin 7 Red w/ black = Power to AT control unit (shouldnt need, but might be shared with memory power from ecu, hence the ? on top)
Pin 9 Black w/ red = factory boost gauge
Pin 10 Black = Ground to cruise control computer
Pin 11 Yellow w/ red =Self diagnosis connector for AT control unit(shouldnt need)
Pin 12 Green w/ white = TPS signal to cruise computer
Pin 13 Blue w black = from fuse block to inhibitor switch (shouldn't need)
Pin 15 Blue w/ red = power window relay
Pin 17 White = Self diagnosis connector for AT control unit(shouldnt need)
Pin 18 Green = Idle switch to cruise computer

Now I've got a discrepency in the info above, and what I've actually swapped. Here is what I've done with the auto side of the harness:

Pin 2 - Yellow w/ White - Not needed
Pin 3 - Brown - Not needed
Pin 4 - Red w/ White - Not needed
Pin 5 - Red w/ Green - CEL
Pin 6 - Red w/ Black - A/C clutch
Pin 7 - Red w/ Black - May need
Pin 8 - Black w/ White - ???
Pin 9 - Black w/ Red - Boost gauge
Pin 10 - Black - Cruise comp.
Pin 11 - Yellow w/ Red - Not needed
Pin 12 - Green w/ White - TPS signal
Pin 13 - Blue w/ Black - Not needed
Pin 14 - None
Pin 15 - Blue w/ Red - Power window
Pin 16 - Yellow - ???
Pin 17 - White - Not needed
Pin 18 - Green - Not needed

Pins 6 and 7 are both Red w/ Black stripe, however, I think Pin 7 is Red w/ Black stripe w/ Silver Dash.


I'm really at a loss as to why I'm not receiving power to the rest of my interior. Assuming that both harnesses use the same colors to send power to the interior, I should have everything I need, correct? Any clues as to why I don't have power to everything?


EDIT: Ignore everything below this line-----------------------------------
So Pins 8 and 16, what do those go to?
 
Actually just found info on pins 8 and 16. Pin 8 goes to the ABS controller on AWD models, and pin 16 is a line to the Diagnostics port.
 
hey im doing the same swap but my motor is from japan.some of the wires from the harness is cut so im trying to match up the wires but the problem is i got a american eclipse to a japan motor.any suggestions?????any help would be greatly appreciated.thanks
 
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