{"product_id":"ignition-coil-31609-65a-5-ohm-12v-points-dual-fire-for-harley","title":"Ignition Coil 31609-65A 5 Ohm 12V Points Dual Fire for Harley","description":"\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5Ω Points Ignition Coil, Replaces 31609-65A \/ 31609-72A​ Direct aftermarket coil for 1965-1984 Harley-Davidson​ motorcycles with mechanical points and condenser ignition. Replaces 31609-65A, 31609-72A, 31609-73A. 5Ω primary resistance, 12V, 2-wire (positive + ground to frame), oil-filled canister, black finish. Match your old coil stamp 31609-65A​ and confirm 5Ω + points system​ before ordering. Not for 3Ω single-fire electronic ignitions (53-434), not for 6V pre-1965 models, not a dual-fire coil.\u003c\/li\u003e\n\u003cli\u003eFor Harley Big Twin \u0026amp; Sportster with Points (1965-1984)​ Engineered for Shovelhead, Panhead, Ironhead​ engines: FLH Electra Glide, FX Super Glide, FXE, FXR, FXS Low Rider, FXWG Wide Glide, FLT Tour Glide​ (Big Twin) and XLH 1000, XLCH, XLCR, XLS Roadster​ (Sportster).\u003c\/li\u003e\n\u003cli\u003eFixes Weak Spark, Misfire \u0026amp; Hard Starting on Vintage Harleys​ Resolves points-era symptoms: cranks but no fire, weak orange spark at plug, backfire through carb, or dies after 20 minutes of riding (condenser failure + weak coil). New winding restores 15-18kV secondary off the points\/condenser. Ohm-test old coil: 5Ω ±10% = good; open or \u0026lt;1Ω = shorted. Replace coil and condenser together for best results.\u003c\/li\u003e\n\u003cli\u003eDrop-In to Factory Coil Bracket, 15 Minutes​ Disconnect battery ground. Remove 2× 1\/4\" mount bolts from the coil bracket (frame-mounted on most Big Twins, under seat on Sportsters). Unplug 2 wires (positive from ignition switch, negative to points\/condenser). Lift old coil out. Seat new coil, torque bolts to 35 in-lb. Reconnect: positive (green\/yellow stripe) to + terminal, negative (black) to - terminal​ going to the points plate. Reuse existing spark plug wires if resistance is under 5kΩ\/ft.\u003c\/li\u003e\n\u003cli\u003e5Ω Points ≠ 3Ω Electronic — Check Your Ignition System​ Critical:​ This coil is 5Ω for mechanical points\/condenser ONLY. If your bike has been converted to electronic ignition (Dyna S, Crane HI-4, etc.), you need a 3Ω single-fire coil (53-434)​ — this 5Ω will overheat the electronic module. Also confirm 12V system​ — some 1965-and-earlier bikes are 6V (require different coil). If your bike has a points plate behind the timer cover and a condenser, this 5Ω coil is correct.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFree shipping included. 30-day hassle-free returns.\u003c\/p\u003e","brand":"Belmont Warehouse","offers":[{"title":"Default Title","offer_id":43360289194193,"sku":"BW-B0CW1DJ37L","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/3123\/5793\/files\/51oDu5NykGL._AC_SL1500.jpg?v=1791011815","url":"https:\/\/belmontwarehouse.com\/products\/ignition-coil-31609-65a-5-ohm-12v-points-dual-fire-for-harley","provider":"Belmont Warehouse","version":"1.0","type":"link"}