Ok, first, I am in the process of downloading a service manuel, so I will probably be able to find what pins for these two. But where is the ECU at in my 93 Accord LX? In my Talon it was in the engine bay, but I don't see it in the Honda, so I figure it is inside under stuff??? Then, also I was told that there is an RPM wire inside the engine bay on Hondas. Can someone tell me where it is. Thanks chad

 

Your ECU is located on the passenger footwell. Just pull back all the carpet and you'll see a silver plate, unbolt that and your ecu is bolted to the backside. The RPM wire is the blue wire coming from your distributer. Hope that helps.

 

thanks a billion

 

Ok, What the F#@#. I put the MSD RPM switch on connected to the blue wire (RPM off the distr). I know I have the right wire from the MSD box (white), cuz I just took this off a eclipse that it was working fine on. Anyways, the tach turns off if I have this hooked up. I think the switch might be working though. I have to check again, cuz I didn't have everything else hooked up yet, I just know the tach just sat at 0. is this too much pull for both things to run? has anyone else had problems like this before. i remember now that a long while ago I had a civic that I hooked up like this, and it did the same thing. I can't remember what i did, or if I just took off the switch though. any help would be appreciated though. Thanks chad

 

Also, does anyone have a pic like this for a 93 accord ecu. I can't seem to find one, and i have been all over google and stuff. Thanks chad

https://honda-tech.com/zerothread?id=801136

 

that is the diagram in the vafc or safc manual...you can download it off of apexi's website...

 

I have downloaded it the other day and it didn't have my car, I guess i go by the accord wagon with the f22? Also, any word on why this MSD switch turns off my tach. thanks

 

Ok, please help one more time. I hooked up the switch directly to the ecu, and it works without killing my tach. Cool. Now, after searching all over the internet including the apexi tech, i can't find the A/F ratio pin off the ecu. Can anyone please help me on that last thing. It is a 93 accord LX.