Stepper bedside connector question

[PokeyC10]

Ok, I have looked all over the site and the web... Does anyone sell the bedside connectors for the tail lights on a stepper (or the connector from the frame to the rear harness). ? I just have this feeling I am going to have one (or both) of them fall apart on me when I go to remove it from the bedside. Is there any trick to not stressing a 32 year old rubber connector when removing it?

I have seen the whole rear harness for sale.. but I would rather not buy the $80 harness just for the connectors

Thanks for any help in advance.