iliv2xlr8

Well, my LS/Vtec swap is a week away and I am currently prepping everything. I am trying to get the best wiring combo for a 93 Dx hatch automatic.

I plan to join the Vtec solinoid wire with the pressure sensor wire in the engine bay.

I am using a LS wiring harness so the Vtec wire goes to the plug on the shock tower on the engine harness. For the chassis side of the shock tower plug, I was hoping that I could simply switch pins there and at the ECU to create a complete circuit to the solonoid.

My questions is what could be eliminated during the swap that could allow this switch on the plug? I have been trying to track down a wiring diagram of that shock tower plug. The online FSM is very blurry is pretty much unreadable.

I have read about switching the EVAP purge silinoid wire, but I was not sure if it went to that plug on the chassis side of the shock tower allowing a simple pin switch. Is there another option? Does anyone know the specific chassis side wiring of that plug?

On a side note, I am using a chipped P28 from Phearable.

Any and all help is appreciated.

94EG8

Go to a junkyard, pull the two wires you need from any '92 hatchback or sedan (there are no '92 coupes) The will be orange/white and orange/blue.

iliv2xlr8

Thanks. I realize I could add the wiring to the harness, but I was wondering if I could switch with something that could be eliminated during the swap?

How did I know you would be chiming in on this 94EG8?

94EG8

I can't think of anything, even the purge solenoid only has one wire on that side of the engine bay (the power for the purge solenoid comes from the driver's side.

Someone has to answer questions There used to be a bunch of guys like me that posted all the time, most of them were actually more knowledgeable than I am.

iliv2xlr8

Thanks. I decided to simply run a single Vtec wire and join A4 & D6 to bypass the pressure switch at the ECU. I plan to loom the wire nicely, it will look fine.

Thanks for the help. You have helped a lot since I started posting questions in the hybrid forum. Much appreciated..