This is a Unit that could be built if your 5 volt reference for you ECU sensors has disappeared due to a faulty ECU or what ever, it's just really for testing purposes...it should supply up to 2 amps, it could be built into a box, the transistor should be fitted to a heat sink, should be insulated from car body earth, a Darlington Pair or 5 volt regulator could be used.......from Fred in Essex.
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