i've given up on trying to find the fault with my rear lamp, theres no power going to it only a negative, the wires also runs to the RH headlamp (which works fine)

the cars a mk1 xr4i, on the diagram the power comes from light switch, into buld controll box thingy?? splits to front and rear lamps through a 10 amp fuse, at first the the fuse kept blowing but after striping wiring, cleaning terminals and checking earths it doesn't do it anymore, just puts no power to rear lamp, if i power cable the rear lamp works fine.

so what im asking is would it be ok to piggy back from left lamp?

i need to get the car mot'd soon and don't have the time to find the fault anymore nore the patience

next quick one is the hazards lights don't work, the indicators are fine but when you but the hazard switch on the replay just gives out a constant buzzing noise with no lights? faulty switch? bad earth on switch?

thanks
josh
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