Switch

An actuation mechanism for a vehicular horn assembly comprising a printed circuit including two or more switch points, each switch point forming a first contact of a switch such that the circuit is closed on movement of a second contact into contact with the first contact, wherein the switch comprises:

• the first contact on a support surface:
• a switch housing sealingly secured to the support surface around the first contact to form a hermetically sealed chamber about the first contact;
• and
• the second contact that is movable in the chamber towards and away from the first contact,
• wherein the support surface is provided on a support having two or more protrusions protruding, from the support surface and received in apertures formed in the switch housing to locate the switch housing relative to the first contact.

A steering wheel assembly for a vehicle comprising.

• a steering wheel;
• an actuation mechanism mounted on the steering wheel for connecting to a horn;
• and
• a depressible actuation member mounted on the steering wheel by means of a resilient biasing means to bias the actuation member away from the steering wheel such that on depression of the actuation member, towards the steering wheel, the actuation member causes contact between a first contact and a second contact of one or more switches of the actuation mechanism to operate the horn.
• wherein the actuation mechanism comprises a printed circuit including two or more switch points, each switch point forming the first contact of a switch such that the circuit is closed on movement of the second contact into contact with the first contact, wherein each switch comprises:
• the first contact on a support surface;
• a switch housing sealingly secured to the support surface around the first contact to form a hermetically sealed chamber about the first contact;
• and
• the second contact that is movable in the chamber towards and away from the first contact.
• wherein the support surface is provided on a support having two or more protrusions protruding from the support surface and received in apertures formed in the switch housing to locate the switch housing relative to the first contact.