Battery Drain Pointers

[ParkerNorris]

Morning All

I'd appreciate some guidance from some of the more electrically knowledgeable members in identifying and resolving an excess battery drain.

I have a fresh alternator and Bosch battery, the charging system is fine. What I have identified, though, is a noticeable voltage drop on the battery over a day or so...

This morning, with an ammeter, I have measured a 120mA drain, with no key in the ignition. I understand that anything up to 0.05A is acceptable; I'm obviously over the limit!

When I remove fuse #1, there is virtually no measurable drain.

So, assuming it is something on the fuse #1 circuit, where should I be looking ? The factsheet shows this fuse as 'Cabin'; which I assume to be interior lights. None of the lights are on, so that should not be an issue, but I do have a Daewoo Nubira clock in the headlining above the mirror, which is fed from the courtesy light. Is this a likely culprit (I'll go and disconnect it to see), or are there other places I should be looking ?

Thanks for reading...

[wonkanoby]

http://www.igmaynard.co.uk/bongo/forum/ ... TERY+DRAIN

[ParkerNorris]

Thanks for the link; I had tried various searches, but didn't find that one.

However, I've found that it was the clock; disconnected it, drain down to 10mA. Due to my laziness on installing the clock, I had joined the blue and red wires together, before connecting them to the courtesy light feed (rather than having the red wire connected to the ignition feed). I'm guessing that the clock being 'fully' on was the reason for the drain. I shall now install it as per the fact sheet...

[Simon Jones]

Bear in mind when checking current consumption to turn off the courtesy light if you have the door open, and also the later models have a light above the ignition key which stays on for a few minutes after the door are closed.