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post #1 of (permalink) Old 15th December 2006 Thread Starter
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Making the 12v cigarette lighter sockets permanently live

I would like to make a little wiring mod to my fuse box to make the 4 cigarette lighter sockets in my Laguna permanently live rather than through the ignition.

I am competent with electrics so I know how to do the mod but looking at the Haynes manual the UCH / MTU (Multiple Timer Unit) seems to be joined to the back of the fuse box. Is it possible to access the back of the fuse box without damaging the MTU (or my wallet)?

I have all sorts of horror thoughts running through my head that with power loss to the MTU it will forget everything, not recognise my ignition card, the steering lock will be engaged and a very expensive tow to the Renault dealer to get everything reprogrammed.

My other thought is that the Haynes manual always recommends disconnecting the battery before carrying out any work. If the MTU loses its settings on power loss surely disconnecting the battery would have the same effect?

Anyone got any knowledge/advice on the MTU before I make costly mistakes!
Currently in onnward's garage:
2001 Renault Laguna
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