Ezgo Powerwise charger issue

[Tpsfoto]

Hi.
do you guys know if the diode resistors are suppose to pass current...I thought that when you have a good one and put a meter on either side there should be no power through.....but I bought two of the new style diodes and did the test with the charger unplugged and put my meter on Ohms, placed one lead on one side and put the other on the metal and the needle jumped.
Prior to putting in the new parts....my charger blew the 50 amp fuse, which I changed and I did the two diodes.....usually there are the culprit for blowing fuses.
The charger is now working.....but I hope the new diodes won't blow it again.
Attached is what I bought.


Thanks
Larry