True 2 wheel hi and low mod. Without manuel locking hubs. And without fault lights or codes. Here's all you need. 2 eight foot vacume lines. One six...True 2 wheel hi and low mod. Without manuel locking hubs. And without fault lights or codes. Here's all you need. 2 eight foot vacume lines. One six and one four foot ground wires. One indicator light. And one mini add a circuit that just plugs into you're fuse box. And any type of manuel vacume acuator. (Even a syringe used for injecting butter in turkeys will work.)... simple installation next Show more