The BTR EFI Live DSP5 Selector Switch is a must-have for serious Duramax enthusiasts running custom EFI Live DSP5 tuning on their 2001–2004 Chevy and GMC 6.6L LB7 trucks. With this easy-to-install, OE-style rotary switch, you can instantly toggle between up to five custom engine calibrations—with the turn of a dial, all while driving.
Engineered by seasoned American automotive electrical experts, our DSP5 switch kit includes a robust, positive-detent switch, pre-terminated wiring, mounting hardware, and protective loom for a professional-grade install. The factory-style blue wire design mates directly to the ECM's connector (signal: pin 69, ground: pin 49), ensuring optimal compatibility and trouble-free use.
Unlike generic alternatives, the BTR switch is built for reliability and strong contact throughout thousands of cycles—because your tuning should be as dependable as your truck.
Pin numbers for your DSP5 Switch by model:
Your DSP5 switch includes a nut and two washers. The bottom smooth washer must remain on the bottom with the tab located in hole number five. If this washer falls out inside the switch, turn the switch fully counterclockwise and place the washer back with the tab aligned in hole five. Then verify the switch moves exactly four clicks clockwise. If not, repeat the process by adjusting the washer position until proper operation is achieved.
Installation Notes:
Connect signal and ground wires to the correct ECM pins according to your truck model. Detailed installation instructions are included.
Note: Compatible only with ECMs programmed for EFI Live DSP5 switching. Confirm compatibility with your EFI Live tuning setup before ordering.
