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u got the wrong wires my friend
u prob. have the earlier production of the supra(early 89), u need the 89 and below wiring harness
 

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The wiring harnesses are different for those years. You need the right harness or find a different ECU.

410 for the harness? Try again and call some other places man. Call Jeff @ Jay Marks. I KNOW you can get it for less than that.
 

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Discussion Starter #4
supraNa1990 said:
u got the wrong wires my friend
u prob. have the earlier production of the supra(early 89), u need the 89 and below wiring harness
so what your saying is if i use an 88 wiring harness and ecu it will work??

btw i called jay marks thats their price. i talked to Jon.
 
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