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Toyota wiring harness?
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<blockquote data-quote="bluetoy" data-source="post: 244477" data-attributes="member: 569"><p>True. </p><p></p><p>The disagnostic port is under the hood and part of the engine harness itself. You shouldn't need to do anything to the engine side of the harness. The "dash" harness is the one that will need to be disected. </p><p></p><p>As for the check engine light, keep in mind that it is a ground signal from the ECU. So if you use a bulb, the CEL wire from the ECU will need to go to the negative side of the bulb and you will have to get the positive side of the bulb from a ignition on source. Toyota typically powers most circuits when you turn on the ignition and uses ground to activate them.</p></blockquote><p></p>
[QUOTE="bluetoy, post: 244477, member: 569"] True. The disagnostic port is under the hood and part of the engine harness itself. You shouldn't need to do anything to the engine side of the harness. The "dash" harness is the one that will need to be disected. As for the check engine light, keep in mind that it is a ground signal from the ECU. So if you use a bulb, the CEL wire from the ECU will need to go to the negative side of the bulb and you will have to get the positive side of the bulb from a ignition on source. Toyota typically powers most circuits when you turn on the ignition and uses ground to activate them. [/QUOTE]
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