4A-GE MK1 Engine Wiring a custom light to switch on when T-VIS is enabled and off when it is disabled. [Archive] - Toyota MR2 Message Board

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No matter how ricey the idea sounds I am quite curious what it would take to wire up a system where an LED would power on when the engine reaches the set amount of RPM (4,400rpm). Just for the hell of it I was wondering if anybody here knew what kind of wiring that would take and if it was even possible. Thank you.