The hks twin power works inline with the stock coil. But the twin power can solve all these problems and maximize its potential engine power.

Hks Twin Power Dli Hks Ignition Amplifier 43001 Ak001
Hks twin power wiring diagram. General wiring harnesses are included in each unit to aid in installation and mounting. Will also connect just like they would on a stock car but i prefer the compact installation and. From memory they wiring is complicated and better to have a mechanic or auto electrician install it hi voltages could kill you or fry your electrical system if u phuck up the install. The highly powered up engine by the tuning it causes ingnition system failure. All twin power units except for dli. 2 refer to the corresponding vehicle list to find the correct ecu diagram.
Vehicle specific wiring harnesses are also available for certain models. But the model i have which is the box with the black harness attached to the box like exactly in the link below. I notice a lot of shops list hks dli 2 for supras. The twin power dli 2 came with a harness but doesnt seem like i can find any info on how to wire this unit. Main unit is discontinued. The only info i found was about the dli 1 not the dli 2.
Just follow the instructionssurprisingly the diagrams that come with the twin power are very good. Each compact and attractive twin power unit is constructed of durable anodized aluminum and sealed to prevent corrosion from moisture. Hks twin power ignition amplifier tpia velcro or similar to mount the unit length of 12 gauge electrical wire bullet connector 1 male one female soldering iron and solder electrical tape cable ties to make it all nice and tidy procedure. From the pic you posted the open plug on the hks harness should plug into the factory coil. Twin power make the ignition system more powerful for souped up car. Fitting the hks twin power kit is recommended under these conditions.
Remember that the hks twin power is not compatible with non resistor plugs according to the manufacturer so that means no b10egv. Then the factory harness plug that used to go into the coil is wired into the portion of the hks harness that has been cut and ground that other wire. Factory wiringk eyswi tchc on r vehicle side harness 6 5rpm signal lead wire connection 1 connect the brown wire from the turbo timer to the supplied brown rpm signal lead wire. Hks is announcing twin power the super powerful ignition tuning part.