My kit was only £40 from the dealer. Consists of two relays, 1 voltage sensitive switch, the socket, mounting plate, cables and relay mounting plate.
Would cost this to price individually.
If you have all the parts you could wire a negative to a bolt behind the rear plastic interior boot panel and run a positive cable from the battery to the socket (using a relay switched to an ign source).
I used tow equipe indicator sounder and used ther wiring diagram and like yella sis use block crimps or better still male un female blue [10amp] crimps . . . .it wer easy
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