Anyone know the RIGHT way to wire a map sensor for h22a prelude swap? Color of wires don't match. They are ground volt and sensor feedback. Just don't know which.

 

Turn the ignition to on position without starting the car and test for voltage. When you get 4.5 volts that's reference. Then test for ground. When you get ground, that's ground wire. The only other wire is the signal wire.

However, without knowing what kind of car you have there's no way to know which wires coming off the map sensor go to which.

 

You should not have to wire any thing, it should just plug right in most cases


Posted from Honda-tech.com App for Android

 

lol I would agree however it would appear that he can't do that, hence the request for help to wire it in.

 

Well the wires are cut after the plug and I think they aren't matching up right. I need to get a whole new sensor but cant right now. Its a h22a prelude 93.

 

Someone had a post about itbut I cant find it

 

if you look in the faq section there is a service manual for whatever gen you have and will have the complete wiring guide in there

 

the pinouts are the same on both OBD1 and OBD2 map sensors. The map sensors will be plug and play. The only wires you may have to do yourself are the vtec wires if you have an h22 prelude that did not original come as vtec.

I cant remember off the top of my head but there are some model preludes which come prewired for vtec. You just have to simply tap into it.

 

What car, what engine and what harness are you trying to put together?


Posted from Honda-tech.com App for Android

 

We don't need to even know the engine. We need to know which map sensor you are trying to wire in. Which car is it from ? You can find out which wires to connect to the map sensor wires using my first post.

As soon as people know which map sensor you're using you can find someone that can get the color code for you.