When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hey guys. Car is 00 civic DX. Bought an 99 civic EX engine harness (OBD2B). Should this harness be a plug and plug play with a the b18c out of a 96 GSR? Or is there some splicing that needs to be done on the harness?
tap into driver shock tower to dizzy rpm signal wire
That's hard mode. Better quality jumper harnesses deal with this straight out of the box. Assuming you are using an OBD1 ecu and jumper harness, splice into the ICM wire coming out of A21 or A22 on the OBD1 side, then pin that into A19 on the OBD2B side, which is NEP (engine speed) to the dash. 6" of wire done on your workbench instead of whatever else you were going to do to get to that tach output wire.
If you can find a clean OEM distributor, swapping that and then selling off your other distributor is easiest. Otherwise, re-pinning the distributor is easier than doing it on the loom. This is the connector you need:
If you are trying to run an OBD2 ecu then it's slightly more complicated but not awful.
Honda did a really good job rearranging the pin locations from the OBD2A to the OBD2B harness. Everything that goes to and from the body and ecu is on ECUA so there's only a few necessary wires in C131 (the green connector) for things that go straight from the engine itself to the body. Things get ugly if you plug an OB2A harness into and OBD2B car though, even though it is physically possible to do so. More info than you need, just something to be aware of
B18C into 2000 Civic DX
