Switching from speed density to mass air

[jerryc]

I am switching a car from speed density to mass air and this is what I need to know.I have the computer out of a mass air car,I also have a C&L meter calibrated for 19#inj the question is the plug coming off the meter has 4 wires colored red(hot),black(ground), blue(?),brown(?) I know the blue and brown wires go to pins 50 and 9 on the mass air computer but I cant remember which one goes to which and I dont know if it would hurt anything if I hooked them up wrong.If anyone one knows which one goes to which pin let me know.Thanks

[BigEd]

here is a good article on M.A. conversion.

http://www.stangnet.com/tech/maf/massairconversion.html

[jerryc]

Thanks.I remember the last time I did this I had some codes that were set and I didnt know to do the fuel pump monitor signal or the vehicle speed sensor signal.Thanks