Is cruise control easier with drive-by-wire on an LS swap?

Here is what the documentation says. Each point links to its source; details depend on your exact computer, harness and transmission.

• Rostra's 250-1881 cruise kit uses a main harness (250-2759), a plug-and-play pedal interface (250-2766), and a universal pedal interface (250-2771); the universal interface can be wired into any DBW accelerator pedal and is also listed for certain drive-by-cable vehicles. (Rostra Precision Controls)
• Rostra's 250-1881 drive-by-wire interface works on Ford, Lincoln, Mercury, Hyundai, Kia, Honda, Mazda, and Jeep drive-by-wire vehicles, implying a universal signal design usable across pedal types. (Rostra Precision Controls)
• Rostra's 250-1881 is a cruise-control add-on designed for drive-by-wire vehicles via a plug-and-play pedal interface (250-2766) or a universal pedal interface (250-2771), making aftermarket cruise feasible on a DBW swap. (Rostra Precision Controls)
• E38, E92: Speartech sells cruise control as part of its wiring harnesses for E38 Gen IV swaps and E92 Gen V swaps, configured for your chosen pedal and cruise switch; the add-on cruise kit does not work with GM harnesses. (LSX Magazine (Power Automedia))

Confirm against the instructions for your exact parts before wiring. More: Throttle (drive-by-wire) in our tuning guide.