a couple swap q's [Archive] - Toyota MR2 Message Board

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so im doing the swap, i have all the goods, but a question, do i have to change the body harness for the turbo cluster to work? or is it a plug and play thing? im not worried about the boost gauge more or less just the speedo, and the tacho! also will a usdm ecu and engine harness work on a jdm motor?