I would not suggest using any kind of crimp connectors on a headlamp
connection.
Been replacing them on the hoods of Mack Trucks for years, with solder
joints.
Even if they are coated with Mass dosses of die-electric grease, they
will still corrode in a matter of time, and bye- bye head lights, turn
signals, what ever.
solder the joint, and use  heat shrink tubing over the repair and the
connection is permanent, done , finito.
Crimp connectors are a quick fix measure, at best, and are junk in the
long run.
They will let you down, at an inopportune moment!
I like doing a job once and be done with it!

Later,

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Terry 85 GL