Electrics: annoying electrical problems

[mrfixer]

Anybody else fed up with the electrics on their vehicle
I have a 2003 52 plate s80 d5 executive with most of the bells and whistles
love the car but fed up with bad electrics
first fault not sure if its electric or not but the injectors replacement needed another set sourced
next a solenoid in the gearbox packed up, some you can change the one i needed couldnt replaced gearbox
then the dash started playing up needs soldered
rti wont read discs changed lense unit no change
rear boot motor lets in water starts to not shut stripped and greased the coil spring
front headlamp washers stopped working still to investigate
now the alarm unit has gone faulty battery leaked all over tha pcb board ruined
i wouldnt put up with all this if i did not like the car anybody else feel like this