need some help on my dads mark 6 escort 1800 ghia

problems

- The other day the interior lights would not switch off at all

- The alarm doesnt always arm from the drivers door(could the door lock electric bit for the alarm be nakered?)

- The washer motor for the front makes the noise plenty of water in it,no blockage in the pipes but doesnt work, and whats the wire coming off the actual washer jets?

- The brake pedal makes the Fog light on the button come on and the heated screen, isit a bad earth and any ideas where to look? doesn't always do it either!!

checked the engine bay for bad earths on battery and all chassis leads etc but seemed ok can anyone help? htanks james