Hi, Im new to the site, i have a 70 dart swinger with a slant 6. I have two questions, the first is i took the speedometer cable out back behind the dash, then when i went to plug it back in the bottom tab on the cable where it snaps into the speedometer broke off, so now when i try to plug it back in, it wont stay in. since the tab is broke, does that mean i have to buy a new cable?