<meta charset="UTF-8"> <p>We recommend this relay harness for wiring in single or dual high flow fuel pumps.</p> <p>This harness was built with the BMW 3-series in mind.  Wires are the correct length for trunk mounted battery with fuel pump under the rear seat.</p> <p>The sealed relays and wiring makes for a clean and durable setup.  We include a Deutsch connector kit that enables you to make this a plug-n-play setup.  If you have two pumps, it's great for swapping power from one pump to the next to check function.</p>