I cant find the color codes for wiring map sensor in a 4th gen prelude. I have three wires colored white w/ blue stripe, blue w/ white stripe, and red w/ white stripe. I saw FLIP had the same question on an archived post, but no answers. If anyone has this year prelude and can tell me which is signal and power that would be great. Thanks.

 

red/white = power
white/blue = d17 on ecu
blue/white = d21 on ecu

 

I am not wiring to my ecu......just gonna use the factory wires. I also have a p28 instead of p14 so the wiring prolly wouldnt be the same anyways. Do you know which is ground and which is signal between the white/blue and the blue/white? Thanks

 

https://honda-tech.com/zerothread?id=918703

both d17 and d12 (white/blue and blue/white) from the map sensor go to the ecu via the stock harness, p28 pinouts are the same as p13/p14, most obd I ecu pinouts are the same, for the most part, grounds will be a black/yellow or yellow/black wire, map sensor isnt power/signal/ground, its power/signal/signal and must just ground in the ecu in one of the signal wires

 

mabe im missing something here.....I do understand that d17 and d21 are the white/blue and blue/white, but under the hondata site for wiring up a map sensor, it says the three wires coming from my orig. map sensor plug are GROUND, Map Signal, and 5V. I need to wire up my new plug for my SVE map sensor and if red/white is my power, then which of the other two(white/blue or blue/white) do I use for GRND and Map signal (sensor code A and B) for my SVE plug.......basically I am good on the wires to the ecu, just need to know how to wire up SVE plug.

 

blue/white (d21) is the ground

 

thanks for your help!