RossH

Hi,
I'm hoping to replace the standard radio in my MY02 Impreza WRX with a Blaupunkt DXR70 SAT/NAV system.

I've been advised by Blaupunkt to connect the radio Tacho (speed sensor) to Pin 1 (green/black) wire on the middle yellow plug of the car ECU.

Whilst ordering the 2 DIN to 1 DIN convertor from Subaru dealer, they suggested they had experienced some problem using the ECU as a source for the speed sensor output although no alternate suggestion was made. (Then quoted £150 to install radio themseleves.)

Has anybody had experience of fitting this radio or heard of a problem using the ECU speed sensor.

Thanks in advance.

Ex 205 GTi owner

No problems connecting to ECU on a WRX03 with Alpine navi in my car.

David.

RossH

Thanks for response. Should have asked before, but is there an easy place to make the reversing light connection?

Ex 205 GTi owner

I think you just tap into the power wire for the reversing lights.

David.

RossH

David,
Now had a look at my ECU and it doesn't seem to correspond to instructions from Blaupunkt.
Could you please tell me which plug, wire you used as the "vehicle speed" output from the ECU.
Thanks,
Ross

rosswalker

You can get a speed pulse from the green/ silver bands wire. it is on the 18pin plug that goes in to the back of the dash clocks.