I didn't see any leap problems. I pulled the connectors off, plugged the ends, and pulled a vac on them as well... No leaks...
Tried the code reader. I plugged it in. Black to 1 red to 3, and yellow to 4,8,19. I couldn't get a single blink from the led on any of them... I had tried to use it before, and I might have hooked up the black and red backwards. Would that fry the LED??

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic