okay, so im a bit confused, but i picked up a regular hks dli unit from my local pick n pull, and after doing some reading i thought about trying it on my tII. the dli unit has one red one black and six yellow wires coming of its flying lead harness. i capped three and and hooked up the other three to each negative on the coils (L, t1, t2). the tach starts to move on start up, but when i push the throttle, it starts to go up and shoots to zero. the car stays running, and runs strong, but no tach. if it is just hooked up to leading it works fine, if i have only two (in this case i did L, t1) the tach works, but very peaky. it will go up to three, then shoot to 2, rev it up a bit, shoots back to 3 and so on. if i try to hold the wire close to the ground of t1, it creates huge, bright, and very loud archs......so that is the list, and im a bit stumped. i know hks obviously made the rotary specific one for a reason, but why does the dli work, but i do not have a tach anymore?

 

uh dude... the DLi only works on Rx-8's, which has 4 individual coils.

Because the leading is waste sparked, you need the rotary specific (2nd and 3rd gen Rx-7) HKS Twin Power. it has 5 wires: power, ground, leading, trailing 1 and trailing 2