no, you do not need an obd2 harness... use the 92 dohc harness you have some emissions sensors will not be used as s13s dont have it.... you need a s13 dohc distributor, the wiring on the dohc and sohc dash plugs are also different so you will need to rewire, you need an s13 lower engine harness to make life easier, if you want powersteering you need dohc lines...Originally Posted by Blitanicle99
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