Usage Tips:Features: Material: Made of premium plastics material, with long-lasting durability. Excellent performance and reliability. Transmission Controller Harness: Easy installation. No computer required. Internal Transmission Wire Harness: No internal required. Easy to remove for computer controlled upgrade at a later date. Transmission Adapter Harness: ncludes complete kit. No other sensors or parts needed. Description: Name: Manual shift microcontroller Size: 17cm x 9cm x 7cm(6.7in x 3.5in x 2.8in)(LxWxH) Weight: 200g(7.1 oz) Operation: Functions like a full manual valve body whatever gear you select that is the gear the trans will be in. Gear changes made with factory column shifter or floor mounted shifter. Shifter must have 7 positions PRND321 Transmission will not shift up or down without moving the shifter. Maintains forward shift pattern and engine on downshifts. Operates with continuous full line pressure for shifts, less clutch slippage and cooler operating temperatures. Torque converter lockup with included switch and indicator light. Material: ABS colour: black Package Contents: 1 x Manual shift microcontroller kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.