6-Pack Relay Bypass Switch, Relay Tester, Bypass Switch Kit with Amp Loop 9038A Notes: Please compare your original part and part number with the pics and part number we listed to check whether it’s the right part you need. Part Number: 9038A Features & Details: 1. Wide Compatibility – 9038A relay bypass switch kit Compatible with Japanese, Korean, and German vehicles like GM, BMW, Audi, and Chrysler. Fits most fuel pumps, cooling fans, window motors, headlight switches, air conditioning compressors and other devices using automotive relays 2. Precise & Independent Control – This relay switch kit allows for independent control of the relay circuit via an ON/OFF switch, enabling precise control of various car components and saving a lot of time 3. Current Monitoring Function – Equ.