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Old 05-01-2003, 12:51 AM   #25
Scooby Newbie
Member#: 29704
Join Date: Nov 2002
Location: Tacoma, WA
93 SVX
Ebony Pearl

Default Essential wires

Maybe I can help answer this question having installed 2.2, 2.5, 3.3 and 2.0 turbos into Vanagons.
The wires that need to be integrated into the Main wiring harness are for the following:

Battery power
Ignition power
Speed sensor
Check engine light
Tach signal
Fan relay 1
Fan relay 2
Fuel tank pressure sender
Fuel tank valves (2 or 3)
Fuel level
Fuel temp
Oil pressure
Coolant temp
A/C system
Transmission (if automatic)
Rear defogger
Light switch
Neutral switch
Fuel pump

Other than these wires, the connections needed from the new harness are connectors that go to the engine, ECU, O2 sensors, diagnostic connectors, fuel pump controller, and the air flow sensor.
I may have missed some connection in this list since I'm working from memory but this gives you a starting place. Simple eh.
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