If im doing the obd0 - obd1 conversion and i get one of those jumoer harnesses from Rywire.com, is it necessary to get one of those "obd1 vtec sub-harnesses" or not...

 

It makes the job 10x easier... Plus they come with the VTEC connectors, so u dont have to get a full harness (incase the engine u have dosnt have one)... I went ahead and got the whole thing for $190, with the subharness, conversion, and distributor conversion harness... Came in super quick too, and Ive talked to the guys a few times and seen them help plenty of ppl (many of which got their harnesses elsewhere, and they STILL helped them out) on Honda-tech.com, so they offer GREAT support... So rywire.com gets a 2 thumbs up from me!