6 and 7 are tied together, to ground.

Now, since you got a different result between 1 and 8, that means the +12V is split into 2 separate rails.

Now, are you doing this in ohms? or are you doing this in diode check? Ohms isnt a valid measurement in diode check, and the results mean something totally different. if you are measuring in DIODE CHECK, then 165 isnt bad. thats actually ok. .045 in diode check is bad.