Okay so I've recently installed the neo afc. I wanted to share how to install it a mess free and easier way instead of cutting wires and making it difficult. I found it hard to work with those wires because they're so closely tied together and just a nuisance to work with. I also don't really know how to break up pictures and explain them individually on supraforums so I'm going to number my explanations and they're going to correspond to the picture numbers. Hope that makes sense. Also I didn't exactly take pictures of removing the glove box because it's really easy to do and I'm sure if your going to be doing this job you should know how to remove it.
Always disconnect the battery when your fiddling with wires. Just don't take any risks.
(Pic 1) these are the types of connections I used. They're splice connectors and in my history I believe they work very well and make this job much much easier.
(Pic 2) after removing the glove box you can now see the ecu. The rest of you will have a plastic covering that covers the ecu but I removed it a while back ago because I fed a wideband and boost sensor through the firewall on that side the ecu has 4 screws I believe holding it up. After you remove the plastic covering it will only have 2 left. After removing them you have to play with it and wiggle it out .
(Pic 3) I dog tagged all the wires first to make sure I get the correct wire. When removing the harness from the ecu, an easy way to tell what kind of connection you have to use when trying to tell the difference between an early and late 89 is the pin count. Early 89 will have 10-18-24. Late 89 will have 26-16-22.
(Pic 4,5,6)put the splice connector on the wire and slide in the wire you need to connect. These connections are easy and work great. They make a strong connection when you crimp them down and if you mess up you can remove it without damaging the wire. When connecting the ground it is very important that the brown wire is at least 1cm closer to the ecu than the black one. Just make sure to use the correct size for the wire. I believe these wires are 18 gauge. The splice connectors have a range. For example 16-19 gauge. Correct me if I'm wrong. After putting on the splice connectors just wrap them up with some electrical tape for insurance. After you connect all the correct wires you can hook your battery up and turn the key to the accessory position. DO NOT start the car. You have to set up the afc first. Select number of cylinders to 6 and you have to set it up so it knows it's a karmin type system. On the neo you don't need knock sensor unlike on the safc 2. You also have to say whether you want easy or pro. I just picked pro because you can manage in 500rpm increments which is better than every 1000.
After setting up the afc start the car so it could save the information. I do not reccomend playing around with fuel values until you go out for a ride for an hour so the ecu can relearn the system again since you disconnected the battery for a while.
Always disconnect the battery when your fiddling with wires. Just don't take any risks.
(Pic 1) these are the types of connections I used. They're splice connectors and in my history I believe they work very well and make this job much much easier.
(Pic 2) after removing the glove box you can now see the ecu. The rest of you will have a plastic covering that covers the ecu but I removed it a while back ago because I fed a wideband and boost sensor through the firewall on that side the ecu has 4 screws I believe holding it up. After you remove the plastic covering it will only have 2 left. After removing them you have to play with it and wiggle it out .
(Pic 3) I dog tagged all the wires first to make sure I get the correct wire. When removing the harness from the ecu, an easy way to tell what kind of connection you have to use when trying to tell the difference between an early and late 89 is the pin count. Early 89 will have 10-18-24. Late 89 will have 26-16-22.
(Pic 4,5,6)put the splice connector on the wire and slide in the wire you need to connect. These connections are easy and work great. They make a strong connection when you crimp them down and if you mess up you can remove it without damaging the wire. When connecting the ground it is very important that the brown wire is at least 1cm closer to the ecu than the black one. Just make sure to use the correct size for the wire. I believe these wires are 18 gauge. The splice connectors have a range. For example 16-19 gauge. Correct me if I'm wrong. After putting on the splice connectors just wrap them up with some electrical tape for insurance. After you connect all the correct wires you can hook your battery up and turn the key to the accessory position. DO NOT start the car. You have to set up the afc first. Select number of cylinders to 6 and you have to set it up so it knows it's a karmin type system. On the neo you don't need knock sensor unlike on the safc 2. You also have to say whether you want easy or pro. I just picked pro because you can manage in 500rpm increments which is better than every 1000.
After setting up the afc start the car so it could save the information. I do not reccomend playing around with fuel values until you go out for a ride for an hour so the ecu can relearn the system again since you disconnected the battery for a while.
