wiring on my t80 dont make sence

the horn on my t80 wont work so I took the head light out to have a look at the wiring from the switchinto the blue push in block there are 4 wires yellow with a red stripe black pink then a a blue wire with a white strip this blue with white strip goes to a female connecter  but mine was not connected to anything what are these wires for
ihave a 1990 h reg t80

barker wrote:the horn on my t80 wont work so I took the head light out to have a look at the wiring from the switchinto the blue push in block there are 4 wires yellow with a red stripe black pink then a a blue wire with a white strip this blue with white strip goes to a female connecter  but mine was not connected to anything what are these wires for
ihave a 1990 h reg t80

The Blue with White stripe wire goes via the female push in connector to meter (speedo) light. So if you check in the dark the speedo is probably not illuminating

never ridden it in the dark so would not know it was not working apart from that thanks again john for your help

more problems fived the horn ran a new brown wire to the horn but now the two rear indicator's flash together left one works on its own but the right hand one makes them both go on.i have disconnected the earths and earthed them separately to the rear carrier and still they both flas at the back together