Can anyone tell me where to find the pin readouts for the MAF sensor connector for '98 4.2 F150?

 

A little more info. My CEL keeps coming on. I get the P0174 and sometimes the P0174 AND P0171. The engine runs fine and the idle is smooth. I'm trying to check my MAF per the Haynes manual, but the wire color codes in the manual don't match the wire colors on my truck. I've identified the B+ and the ground, but I don't know what the other two wires are. I know one is Sig and the other one is PCM Power ground but I don't know which is which. Also the connector shown is the Haynes manual is round but the connector on my truck is flat, so I can't identify them using the manual.Any help?

 

More info. I should also mention that I've cleaned the MAF twice with contact cleaner and the sparkplug color indicates that it's running lean.