I know this was along time ago but you don't need the harness or electrical for a Dt200 swap, I'm using a Dt200/Dt180/ rd135 magnetron ignition with a mobile cdi with a built in coil for my Dt200 swap, I bought a machanical powervalve from Brazil and they work great, no servo, no controller, no battery, I have the harness though, 2 servos, 2 complete engines, a 1TG head, 4 Dt200 cdi,s, and a bunch of other Dt200 parts, I'm using the complete motor in my Blaster, I like the taller gears with a 12tooth sprocket and 18 inch rear tires, I might go back to electronic servo someday maybe