{"product_id":"standard-ignition-ru-540-a-c-power-module","title":"Standard Ignition RU-540 A\/C Power Module","description":"\u003ch2\u003eReliable A\/C Power Module for Buick, Cadillac, Chevrolet, and Oldsmobile\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition RU-540 A\/C Power Module is designed to provide consistent HVAC control for select Buick, Cadillac, Chevrolet, and Oldsmobile models. Engineered for durability and precise operation, this bolt-on module supports multiple fan speeds and includes a mounting bracket for secure installation.\u003c\/p\u003e\u003ch2\u003eKey Features of Standard Ignition RU-540 A\/C Power Module\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBolt-on attachment method for straightforward installation\u003c\/li\u003e\n\u003cli\u003eFemale connectors with two connection points\u003c\/li\u003e\n\u003cli\u003eConnector shapes include round and square for versatile compatibility\u003c\/li\u003e\n\u003cli\u003eIncludes mounting bracket(s) for secure fitment\u003c\/li\u003e\n\u003cli\u003eSupports 3-5 speed fan control for accurate HVAC performance\u003c\/li\u003e\n\u003cli\u003eSix blade-type male terminals with six connector cavities\u003c\/li\u003e\n\u003cli\u003eCompatible with wiring harnesses (not included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description of the RU-540 A\/C Power Module\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition RU-540 is an A\/C power module designed to regulate the blower motor speeds in HVAC systems of various GM vehicles. It features a bolt-on attachment method, ensuring a secure and stable fit within the HVAC assembly. The module includes female connectors with two connection points, accommodating both round and square connector shapes. This design supports 3 to 5 speed settings, allowing precise control over the vehicle’s climate system. The included mounting bracket(s) facilitate proper positioning and stability during operation. With six blade-type male terminals and six connector cavities, the module ensures reliable electrical connections for consistent performance.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Common Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBuick models such as LeSabre, Park Avenue, and Roadmaster\u003c\/li\u003e\n\u003cli\u003eCadillac models including DeVille, Eldorado, Seville, and Fleetwood\u003c\/li\u003e\n\u003cli\u003eChevrolet models like Corvette and Commercial Chassis\u003c\/li\u003e\n\u003cli\u003eOldsmobile models including 60 Special, 98, and Toronado\u003c\/li\u003e\n\u003cli\u003eOther GM models such as Allante, Brougham, Reatta, Riviera\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by the RU-540 Module\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIntermittent or non-functioning blower motor speeds\u003c\/li\u003e\n\u003cli\u003eHVAC fan stuck on a single speed or not responding to controls\u003c\/li\u003e\n\u003cli\u003eElectrical connection failures causing HVAC system malfunctions\u003c\/li\u003e\n\u003cli\u003eLoose or unstable mounting leading to inconsistent blower operation\u003c\/li\u003e\n\u003cli\u003eCompatibility issues with original equipment blower motor controls\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the vehicle’s ignition is off before beginning installation\u003c\/li\u003e\n\u003cli\u003eUse the included mounting bracket(s) to secure the module firmly\u003c\/li\u003e\n\u003cli\u003eVerify connector orientation—female connectors with round and square shapes\u003c\/li\u003e\n\u003cli\u003eCheck that all six blade terminals are properly seated for reliable contact\u003c\/li\u003e\n\u003cli\u003eWiring harness is not included; reuse the existing harness or source separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eStandard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The RU-540 A\/C Power Module undergoes rigorous quality control to ensure reliable HVAC system performance. While hardware and instructions are not included, the product is backed by Standard Ignition’s limited warranty against defects in material and workmanship.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":44697911460021,"sku":"FBHK-RU-540","price":185.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_RU540_Fro.jpg?v=1775093634","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-ru-540-a-c-power-module","provider":"PartCatalog","version":"1.0","type":"link"}