help needed central locking fuse

[brainzy]

help needed guys the central locking fuse keeps blowing, iv changed it 3 times today also when i do the change it sparks so what do you reckon any advise will be appreciated.

[Rav335uk]

If the FUSE is blowing then the CL relay must be knackered.
Have you checked that??

http://www.e30zone.net/e30zonewiki/inde ... Black_Wire

[Brianmoooore]

What rating of fuse are you using?
Does the fuse blow randomly, or only when you operate the locks?
Do you have an on board computer, in place of the analogue clock?
Do you have a radio with a separate amplifier?
Do you have an after market alarm/immobiliser?

[brainzy]

central locking works then leave it for a while come back try locking and wont work.

30 amp green fuse

does have a computer

also a sub with amp in boot

and has been de-locked with a clifford concept but its the sparking bit when i change the fuse thats worrying me

[brainzy]

oh and the central locking relay iv located it under the dash ever since my old one was full of water

[Rav335uk]

Brian will love the Clifford Alarm

[Brianmoooore]

Fuse 27 is for the OBC horn, the additional audio amp, IF it's been connected to where it should be, and is a common place for an aftermarket alarm to be wired to.
I doubt if the central locking is anything to do with the problem, TBH - the other bits are more likely candidates.
Remove the fuse, and try your audio system. If the boot mounted amp. still works, then it isn't connected to where it should be, and can be eliminated from enquiries.
Also, with the fuse removed, try the alarm/immobiliser. Obviously the central locking won't work, bit you should be able to tell if it' working by a flashing LED or smilar.
If both the above prove to be nothing to do with the fuse in question, remove the access panel above the glove box, and remove a plug with two red/whites wire from the accessories socket at the back. This will disconnect the OBC alarm horn, and eliminate this if the fuse stops blowing.
Probably a good idea to make sure that the wiring to the locking ECU isn't chaffing on a sharp edge, since you've re routed it.

[brainzy]

brain your a star mate just from you telling me that i have a good feeling i know what it is, a few days ago the sub stopped working when i was trying to figure out why i noticed the big thick red live cable going to the battery was hanging from a few threads i done a quick job n went on my way, anyway i ended up changing the battery a couple days ago n this started i reckon its that cable thats causing the drama il check it out tommorow thanks again mate.

[brainzy]

sorry i mean brian (disclex.....dyxl..........dics........ OH YOU KNOW WHAT I MEAN !!!)

[brainzy]

that was my next move as it is s h i t

[Brianmoooore]

Don't celebrate too soon! If you can see a red cable going to the battery from the amp., then it's not wired as to BMW's specifications, and isn't likely to be anything to do with fuse 27.