if you want a budget setup, just pop into maplins, dont bother with the kits, althought they are only £24.99 and £9.99 for the lower end one.
But 5 metres of 4 gauge power wire at £2.99 a metre
and one or two metres of earth as well, same price compared to £8 in halfords
get a run of stinger rcas for a tenner
speaker cable a roll of 10 metres for £9.99 for 17 gauge oxygen free shark stuff.
get all the gold plated battery crimps, and amp connections to neaten it up
an inline glass use holder under the bonnet,
a distribution block, preferably a fused one
and a pack of fuses
and dont forget some blue wire for your rem wire, and possibly some speaker crimp spade connectors.
ull get all in for under £30ish pound, and all of reasonale quality, can u tell i work there yet