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I am installing a Pioneer Avic x930bt in a 2004 Sedona and am looking for the signal wire that that I can tie into to provide the nav unit with the speed input. I've done quite a bit of searching and am not coming up with much.
You'd think the body wiring should be the same, but the info I have suggests that it may not be. Could be due to different instrument clusters.
The image below is from a workshop manual covering the Sedona with the 3.5L engine, and shows 'Speed signal' (presumably the speed pulse from the sensor) on pin 3 of connector A, and 'Speed out' on pin 8 of connector B of the instrument cluster. The information in this manual is pretty lightweight in comparison to the manual for my vehicle.
The circuit schematics for the instrument cluster in the workshop manual for my 2004 model (2.5L K5 engine) is clearer (see attached file below) & shows that the speed sensor 'Pulse In' to the speedo is a white wire on A8 (pin 8 of Connector A). There is also a 'Pulse-out' on A7 from the speedo which goes to the ECU and ETWIS (body computer) - white/black wire.
So as you can see different wiring and different connectors shown in each manual.
The speed sensor on mine is a 3-wire unit which suggests its a Hall-effect device so should produce a 12v square wave (unlike 2-wire units which typically produce a sine-wave of some amplitude or other).
Not sure of the difference between the Pulse-in & Pulse-out signals - possibly just buffering (anybody know?). If so, that would indicate that Speed Out / Pulse Out would be your best option.
So take your pick! Let us know what you find & whether it matches either of the above.
Wow, thank-you for the great info. I had pulled the cluster to look at it before and there are 3 long narrow connectors that are probably the same or similar to what you have. I will see if the wire color on pin A7 is black/white and if so, I'll give it a shot.
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