Renault Megane 1.6 2004?

I have a problem with the airbag & service light constantly on.
How can I get to the connectors (front & back) to clean the connectors?

Rob Smith recently had the same problem - & managed to repair it. Please see below. - Rob if you can let me know or anyone else that would be great!

"Have had the same problem with Airbag warning light on my Wife's 56 plate coupe. Renault garage performed free diagnosis (long story) ,identified an issue with rear belt tensioner and quoted £500 for new part of the loom. Seems common problem with the connectors. Have tried cleaning each connector and applying conductive grease which seems to solve the problems at least for a few months and gets it through the Mot

Rob Smith
February 2015"