2JZGTE Wiring Harness Made Easy

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Jan 11, 2017 | 10:49 AM

#166

gerrb

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From: A Mile Ahead of You

use the oval for now ... and when you have the opportunity to get a TT alternator which uses also the oval plug get one. They have more amperage than that of the old GE alternator

Jan 11, 2017 | 02:16 PM

#167

motorheaddown

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From: Florida

I actually keep the 3-connector (Supra/Lexus) and 4-connector (Tundra/GX470) wired together to support any alternator. Then, I can revert back to the old alternator if I'm in a pinch. The Tundra alternator outputs much more current at lower RPMs.

The p/n# for the 4-pin connector you will need is 90980-11964.

The supra 3 pin connector the pins are as follows:
1-L-terminal for charging light
2-IG-terminal for ignition power
3-S-terminal for Alternator sense

The Tundra 4 pin connector the pins are as follows:
1-S-terminal
2-IG-terminal
4-L-terminal

Thanks,
-scott

May 12, 2022 | 06:48 AM

#168

silentkill

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Quote:

Originally Posted by gerrb

Attachment 425988

For SC300 & SC400

IK1
Pin 8 of IK1 goes to Pin 1 of Short Connector and to Pin 4 of Igniter (TAC)
Pin 9 of IK1 goes to Pin 1 of Water Temp Gauge Sensor

For SC300

IK2
Pin 24 of IK2 goes to Ground on Front Intake Manifold

Short Connector (6 pins)
Pin 1 of Short Connector goes to Pin 8 of IK1 Connector
Pin 2 of Short Connector goes to Pin 20 of IK1
Pin 3 of Short Connector goes to Pin 3 of IJ1
Pin 4 of Short Connector goes to Pin 3 of EB2
Pin 5 of Short Connector goes to Pin 7 of IJ1

For SC400

IK2
Pin 24 of IK2 goes to Ground of Rear Side of Cylinder Head

Short Connector (3 pins)
Pin 1 of Short Connector goes to Pin 8 of IK1 Connector
Pin 2 of Short Connector goes to Pin 20 of IK1
Pin 3 of Short Connector goes to Pin 9 of IK1

Attachment 425989
For SC300 & SC400

IJ1
Pin 2 of IJ1 goes to Pin 2 of II1 & Pin 2 of VSV (Water Valve) Connector

EB1
Pin 1 of EB1 goes to Pin 4 of the AC Connector
Pin 2 of EB1 goes to Pin 23 of the 40 Pin Connector

Attachment 425990
For SC300 & SC400

II1
Pin 1 of II1 goes to Pin 7 of the EB1 Connector & to Pin 1 of the AC Connector
Pin 2 of II1 goes to Pin 2 of the IJ1 Connector & Pin 2 of the VSV (Water Valve) Connector
Pin 4 of II1 goes to Pin 2 of the AC Connector
Pin 5 of II1 goes to Pin 34 of the 40 Pin Connector
Pin 7 of II1 goes to Pin 1 of the VSV (Water Valve) Connector

IK1
Pin 10 of IK1 goes to Pin 11 of the Data Link Connector

EB1
Pin 7 of EB1 goes to Pin 1 of the II1 Connector & to Pin 1 of the AC Connector

Hey Gerbb, thanks for this post, it helped me figure out why my ambient temp sensor wasn't reading. The guy who made my harness did not pin #7 on EB1 at the fuse box so i spliced it into Pin 1 of the AC Connector and everything works flawlessly now!!