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Greddy TT and 1g Harness

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mach4g63t

15+ Year Contributor
402
0
May 28, 2007
St. Louis, Missouri
I have a Greddy Turbo Timer and I bought the corresponding harness from extremepsi.com (part # TT-14-43). The instructions on the box are Japanese but it does say that part number is for teh 4g63 engine on the back of the box.

I'm not quite sure how to install this harness. I know the two plugs go into the wiring harness under the steering column, but I don't know how to wire the turbo timer into that harness.

The turbo timer itself has a big 4-sprong connector (red, geen, blue, and black) as well as a single grey wire, and a 2-pin connector (brown and purple).

The wiring harness for the car has a big 3-prong connector (green, red, blue) with red and green having splices that come off. There is also a long white wire connector on the end of the harness by the TT side. Hopefully the pics will help.

Is this the right harness?

Self-bump.
 

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I had the same problem today when I went to install my turbo timer in my 1g. I searched and found your thread. I searched google and ebay and i found this on ebay:

Turbo Timer 3pin - 4pin Harness greddy blitz | eBay

its a 3 pin to 4 pin harness, looks like it has a ground wire too. kinda sucks that the plug and play harness just didnt have a 4 prong end and you have to get another harness. Hope this helps!
 
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