I have bought a set of rear parking sensors which instruct one to connect to the rear light parking light supply.  However, since as I understand that requires the car light switch to be in the sidelights position (especially when parked in the dark) and the manual warns of draining the battery if parked for a few days, this seems NOT to be the wisest power supply to choose?  Also, does that mean in any case when parking during the day (without sidelights on) they will not work?  Advisory comments & suggestions kindly please?

A warm welcome to the Forum  !  Sounds like you should connect to the reversing light which should only come on when reverse is selected.

Thanks.

Further to my previous reply, OldmanSomerset, just to say did it and it works fine, thanks!  But for the benefit of others attempting it, installing it on the Citygo is not at all easy due to the obstructions underneath at the rear & hindrance to getting to the recommended positions (especially the inner two on either side of the numberplate recess).  Had to temporally fix the wiring loom, I prepared beforehand (which must be done, without the sensors!), to a 10M steel tape to push through from the passenger side (the only side with existing hole & rising cables from underneath, above the wheel arch) to the other side for my wife to get hold of & remove the loom for retrieval.  The wiring length of the driver's side sensor is just long enough to reach the space behind the passenger side rear lights box!  With the boot lid removed & the rear seat pushed forward it's just enough to see the rear lights loom plug red locking mechanism (Skoda please increase access hole next time!!) & lift it, prior to withdrawing the plug to connect additional wiring (N.B. +ve to reversing light supply plug pin 4 & -ve to pin 5). There's just enough room to tuck the kit (controller & wires etc.) in the space behind the panel.  (I strongly recommend Skoda fit them to all new cars (including the front as well!).

Well it sounded quite tortuous, a bit like a dental procedure!

 

Anyway, great that it worked out alright for you in the end.

Thanks, OMS. 

 

For the benefit of others attempting to do it, I should have also mentioned a couple of other things:

1. When drilling into the car bumper for the sensors, temporally stick a piece of light-coloured, PVC tape at the positions where you should drill (to avoid the drill moving around & scratching the paintwork) & mark on the tape a cross where to drill (I put mine 60cm above ground & spaced 35cm apart).  Start the drill slowly at the cross before speeding up.

2. When making the wiring connections, if you use Scotchblocks splice connectors you may need to bend the end of the sensor wire over to obtain enough thickness for the splice to make good contact when pushed down.  Also feed the sensor wire in to the block from the opposite end to the plug, so the wire won't have to bend 180 degrees as you replace the plug in the rear light.