Honda Legacy Engine Harness

PLEASE read the description completely and use the drop down boxes to select the necessary accessories for your harness.

Introducing our engine harness for Honda legacy style engines, such as the popular B Series, D Series, and H series as well as many other variants that were available in our beloved 1990's golden-era Honda platforms. This harness was built to allow you to run your favorite engine setup in nearly any chassis or application not just limited to factory Honda platforms.

This harness is race inspired and does offer specific limited accessory support, so please read carefully as this harness is not designed as an OEM replacement nor does it come with a sub harness for make/model specific connections.

Our harness is built right here at our facility in the US, uses all new wiring and connectors, and boasts premium labeling in a white color with black text protected by clear glue lined heat shrink (we do NOT use the distracting cheap yellow labels you see from most places online). This product has a nice fit and finish compared to others on the market using subpar materials and excessively baggy loom.

All wires are COLOR CODED, no more confusing all black harnesses. We build our harnesses to ensure easy modification or future diagnostics with the end user in mind. We do absolutely zero splicing on the engine side of the harness, meaning less issues and no need to tear apart the beautiful loom due to a subpar crimp done at an overseas factory.

We also include a high quality seal for your firewall pre-installed, so no need for an expensive passthrough plate. This provides a weather proof seal into the cabin under all vehicle conditions.

Now lets get to the fun stuff!

ECU- This harness uses OBD1 ECU connectors since this is the ECU most performance applications are currently running. We do not offer any modifications to this layout.

Distributor- This harness uses the large square 10 pin style OBD2A distributor connector as this is the most common distributor on the market. If you have an H series, you must utilize an internal coil distributor. Please use the drop down box if you need a jumper for your OBD1 or OBD2B distributor.

Injectors- Our harness features a quick change injector clip setup allowing you to swap to another injector connector in the future in a matter of seconds. This provides great flexibility for future upgrades when installing larger injectors. Please use the drop down box to select your injector type.

Alternator- We utilize a quick change alternator setup allowing you to easily switch from OBD1 to OBD2 or even H Series style alternators all with a simple adapter swap, no more cutting or splicing needed to switch engines or replace an alternator. Please use the drop down box to select your alternator type.

What does this harness support in its current form?

You are able to modify this harness easier than any else on the market since we include a 12 pin DTM connection with color coded wire and pinout specs, so there's no need for complicated, unlabeled chassis sub harness guess work or sourcing. You are able to easily run all the necessary data to your cluster or any other analog gauge for engine RPM, Coolant Temp, and Vehicle Speed.

Our simple DT 4 pin connector allows you to run power to the ECU directly and the ignition separately for independent and isolated power sources, just as it should be. We also use this connector for the fuel pump and radiator fan switch outputs, making those necessary connections easy for you to find and get up and running quickly. You can wire these connectors directly to an existing chassis fuse box or use ours CLICK HERE.

We take our harness a step further and fuse the ECU on its own circuit! That means in the event of a crash, or electrical system failure, this harness goes the next step to protect the ECU with a direct fuse on all of the power inputs going into the ECU.

We understand this harness may not have everything you need now or may want to add on to your vehicle in the future but WE ARE ALREADY ONE STEP AHEAD. This harness has all 12v power and grounds spliced neatly together on a bussed connector system. We have several open slots on both the power and ground connectors to allow you to power additional sensors, wideband O2, solenoids, gauges, and more off of your current power supply. You can also use these connectors to supply power/ground to a reverse light switch. No cutting or splicing into the harness is needed to add features later on.

This harness comes pre configured on the ECU side to easily add features using the pre-configured 12 pin DTM for accessories such as boost by gear, dash check engine light, wideband input, IAB, knock sensor, VTEC pressure switch, and more. All features listed on the DTM pinout are pre wired to the ECU side only and would require wiring in a physical sensor to the engine or dash.

REVERSE SWITCH AND CHARGE HARNESS NOT BUILT IN

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