Amazon: honda wiring connectors Amazon: honda wiring connectors. Skip to main content. Try Prime All CURT 55336 Vehicle-Side Custom 4-Pin Trailer Wiring Harness for Select Honda, Acura, Isuzu Vehicles. 4.6 out of 5 stars 379. $18 $ 18. 55 $39 $39. FREE Shipping on orders over $25 shipped by Amazon. Honda Civic Engine Harness Connectors and Plugs | Honda-tech Apr 02, 2015Honda Civic: Engine Harness Connectors and Plugs. One of the most important components of an engine is the main wire harness. It routes all the electrical power required for each component and connects them with plugs. This article explains some common problems with wire harnesses and how to properly diagnose and repair them.