M62 what are the extra wires on canopy?

[The Lorax]

Hi Everyone,
Recently purchased a new M62 and notice that there is extra wiring harnesses at all 4 corner of the canopy. The unit is equip with front and rear working lights already. Does anyone have any wiring diagram or know what these are for?

 

[ranger danger]

Speakers?

 

[mikester]

Aux lighting kit

 

[1badDart]

Aux lighting kit

^^ This ^^