The standard kit comes with a universal wiring loom for the petrol injectors that is soldered into place. You can use a loom like this, with plugs to simplify the job. The plug-in loom cannot be used with the Junior kit. This loom is for Subaru boxer engines, with standard wiring. The loom is copmpatible with most AEB sequential injection systems. Allow up to 10 days for the delivery of this item.