Recently, I was having problems starting the engine. I thought it was the +-wire going to the solenoid that was too corroded (it really looked like that). When I started nscrewing it, the plastic piece broke. That was probably the primary source of the problem I was looking for. I re-did the end of the wire
anyway, but now what with that plastic thing? Change the whole starter? Can I only change the solenoid? Or even better, only the plastic-screw-holder? I think I saw some screws to remove that holder. So far, I attached it temporarly; but sometimes I need a third hand to start

I didn't have a hose clamp, 'cause that would hold that thing a bit better.
Any starter pro?
Thanks in advance
BA-> Fiero 2M4 '85