Ur quattro computer memory fuse (cigarette lighter fuse)

[Colin Aitchison]

Hi all, messing round with the stereo in my 1984 Ur quattro last night, I did short out the 12v feed to the cigarette lighter, this was not a big thing but it would look like the memory to the computer and clock on the digital dash is on the same fuse, all the fuses in the fuse box seem to be Ok but dose anyone no about an in line fuse that may have blown? Thanks in advance for any replys.

[Isimmo]

Looking at the 1985 schematics it’s S4 fuse 15amp -

Feeds cigarette lighter and J128 (indicator unit with computer) in the dash.

It also feeds interior light front and radio - so there’s some clues.

There’s no other inline fuses but there is T2a connection 2pin, grey, behind dashboard which supports J128

[Colin Aitchison]

Thanks Isimmo, spoke to Mike2 at our meeting today and he said the same, fuse 4 in the fuse box, I said to him I had tested all the fuses but I thought I better have a retest just in case I missed one, 15A fuse 4 was blown, looks like I need a 15A fuse and a new pair of glasses, again thanks to you and Mike2.

[Gmac]

Nice outcome!

[Isimmo]

Originally Posted by Colin Aitchison

Thanks Isimmo, spoke to Mike2 at our meeting today and he said the same, fuse 4 in the fuse box, I said to him I had tested all the fuses but I thought I better have a retest just in case I missed one, 15A fuse 4 was blown, looks like I need a 15A fuse and a new pair of glasses, again thanks to you and Mike2.