Fridge Fan Installation

Hi we have just installed 2 fridge fans into the top vent on our Broadway FB and all working fine, but we are wondering how to route the wires for the switch inside the moho?  We are reluctant to drill a hole behind the fridge for the wiring unless someone has already done this?
Is there an easy way to do this?  
All help and any info would be really appreciated..
Many thanks

You could use a temperature switch instead which you leave behind the fridge which comes on automatically.

Stupidly we never thought of that, many thanks!

I used a thermostatic switch on mine, works a treat.  https://www.ebay.co.uk/itm/122155754963?itmmeta=01J1EYV1JXQFJ32PYDFAQ6TVGQ&hash=item1c710ce5d3:g:vTgAAOSw8w1X66Ha&itmprp=enc%3AAQAJAAABANP1cEBdBAFtb%2B%2F62cCqQ%2FxSzSnIsoGwwiWrNkYzsh%2FpwGiqw6%2BKxTcaHUCXF5ziia7s8z0gdat9HARi1Zm7jzn8sTK5ZsFdA2V7d4gFcGEkHxi2lAcgJj4J%2Bqmu4xfoUbQCrXm9KIfu7yhZ7M8Cfd%2BfP05P%2FTDi7PRVPoc4nGomlPzWaTxKMEbR1mkl2V9zPjovZDEaS1OPrSvIFQQD0JZrJ6UTNCnkrFMyvRbs%2FeoTZzUFQUD%2BgEi04EqTf2qvbxj9UpBHAZ0N3qdwNhg9VDqXh3ociDUNs0Wq6k4a%2F0rDrNizeZgPoHYKuLBE2ibAm%2FnnXuMPDB%2FXThNLDDiGwic%3D%7Ctkp%3ABFBM9Jns3otk

Tim

I used the same module - at the time it was possible to buy one ready built into a case for not a lot more - but I haven't checked availability recently. Works well for me too.

Hi Roopert, I have used the one built into the case on my coolbox but found it much more difficult to program, they are still available on eBay.

Tim