astrostart/flex 4200 4204

The tach learn option didn't seem to work so I reprogrammed the tach function to 8 cylinders and 600 RPM from 800 RPM and it seems to be working so far. I ran into another problem and that is the heater/air conditioner will not run on accessory. I have the yellow wire from harness P4 connected to the BLACK/ lt green wire at the Ign. Harness but the heater motor doesn't run. I am getting +12 Volts on the BLACK/ lt green wire when the key is placed in the accessory position as well as ignition position. The install manual says that some vehicles require 2 or more wires (+12 Volts)to turn on the heater/air cond. motor and that additional relays must be added. They reference Programmable outputs P2-13 to P2-16. The problem is I dont know which additional wire(s) I need to connect to under the dash from this relay. Does anyone know the answer? The vehicle is a 2000 F250 Diesel. Thanks Brad

Ignition 1     RED / BLACK OR RED / GRN     (+)          IGN SWITCH HARNESS                Ignition 2     GRAY / YELLOW          (+)     IGNITION SWITCH HARNESS                Ignition 3     DARK RED / BLACk     (+)     IGNITION SWITCH HARNESS                Accessory 1 BLACK/ LIGHT GREEN OR GRY/YEL(+)     IGNITION SWITCH HARNESS                 Starter 1     RED / LIGHT BLUE          (+)     IGNITION SWITCH You can test to make sure its the IGN 3 your missing by testing the polarity of the wire to make sure its + or - then testing it by jumping it to pos or neg if its the right wire your blower motor should turn on. I am almost positive this is whats missing, that is unless you have it connected. Then look for another accessory wire by probing until you find one that is + during run and off during ACC and start.

This is the wiring colors from astrostart Ford F-250 350 Super Duty 2000 WIRE          COLOR        LOCATION    POL. Battery 1     Yellow   Ignition Harness Positive Battery 2    Lt. GREEN/ Purple        Ignition Harness Positive Ignition 1   Blue/Green Or RED / Black Ignition Harness Positive Starter 1    RED / Blue Ignition Harness Positive Accessory 1 Gray / YELLOW             Ignition Harness Positive Accessory 2 RED / BlackIgnition Harness Positive Parklights   Brown       Parking Light Switch Harness Positive Brake Lights Green    Brake Switch Positive Horn        Blue     Steering Column Negative Glowplug     BLACK/ Pink              Behind Instrument Cluster Negative Tach        WHITE/ Pink              At Alternator Lock        Pink / YELLOW             Passenger Kick Panel Reverse Unlock       Pink/Green              Passenger Kick Panel Reverse E-Brake      Lt GREEN/ Red            Parking Brake Switch Negative Clutch       Dk Blue/Orange          Clutch Switch Positive Dome Sensor BLACK/ Blue              Driver's Kick Panel Positive KeySense     BLACK/ Pink              Ignition Harness Negative just remember that you will have to add relays for using the p2-13 p2-16 outputs they are low negative output meant to run a relay not a circuit There is also the programable relay that is built into all astrostarts you can use