wipac 8" from pretty much anywhere. expect to pay £35-£40 +p&p.
easy to mount on an A-Bar, if you want it wired to a sep. switch, that isnt too hard. if you want it wired into your full beam then its a little trickier. if you have no exp with auto-electrics things can get very tricky! i managed to wire in my roof lights ok on a sep switch. search on here for spot lamp wiring/fog wiring things like that. there have been loads and loads of posts inc. some of mine
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