I just built the 'homemade' LED code reader. I have a 16 pin board and I can get the LED to light up (pin 1 is ground and I have to connect the red to the +battery), it won't blink at all. My understanding is one flash means no codes...I followed the instructions from posts here. Any thoughts?

ryan

__________________
RG Newell

1984 300D
1972 250
1986 560SL
1991 300CE