Have you checked both fuse boxes ? Mine went and couldn't figure it out turns out it was the 20amp? in engine bay box

Theres power going to the white connector which plugs into the back of the cig lighter.Ive got a multimeter and have been using it,i haven't took all the scotch  clips off the cables ive been using-not yet anyway.Checked the fuses visually inside the car,and in the engine bay,but my neightbour says just because you cant see a break,doesnt mean that's its ok???God p***ed off

Were the fogs working with just the boost gauge connected ?

I'd disconnect the other gauges and double check any fuses starting with 10 amp (normally red) preferably switch each fuse with a spare good fuse of the same ampage or check current passes through them with the multi meter (as visually it's sometimes hard to spot a break)

As it sounds like you've earthed something out mate , Cos if that circuit is designed to light two big fogs and a ciggy lighter couple of gauge lights shouldn't blow the fuse .

Sorted :) Went through all fuses in engine-ok,then inside fuses-it was a 10amp(illumin),must have been hairline crack.Replaced and then started on the last gauge which I was working on when all this started,and it blew again! The bulb holder had a dodgy wire on it.The wire which has a base on it where the bulb sits on.Cant be arsed to send it back so do you know if maplins will stock a little holder or just the wire with a tiny base on it??Cheers for the help guys :)

Oh good result  :D  I'd say you can find anything in maplins if I can find my out of date catalogue I'll have a look through :) 

Think there's a "how 2 " sticky thread on s.c in tech section for fitting a oil pressure gauge .

Although it's for newage it's probably a bit more explanatory than my ramblings and 2 dodgy pics [emoji5]

Glad you've sussed it bud [emoji106]

Tell me about it! Im only going to wire the oil press/temp up just so they light up for the moment.Might get someone else to do the other stuff another time.