Here are the possible solutions for they have a lot of parts clue
Answer
Clue
Relevancy
repairmen
Clue
They have a lot of parts
Definition
REPAIRMAN, one whose job is to repair things
autos
Clue
A lot may have a lot of them
Definition
AUTO, to ride in an automobile
cars
Clue
What a lot may have a lot of
Definition
CAR, a self-propelled wheeled vehicle
usedcars
Clue
What a lot may have a lot of
newt
Clue
Gingrich who said "females have biological problems staying in a ditch for thirty days because they get infections and they don't have upper body strength"
Definition
a tailed amphibian of the salamander family, also EWT
edison
Clue
He said, "To have a great idea, have a lot of them"