New battery. Charging up to par. I 'm absolutely sure that it has something to do with Injection system fuse #37. there is a high pitched whine under the hood after the key shut off. Until I pull the fuse.

2007 S80 3.2 V6 Front wheel drive I have isolated the drain down to the #37 fuse, fuel injection fuse under hood. I have to listen real close in engine compartment hear a faint high pitched whine after turning engine off, until I pull the #37 fuse. Battery dies after 24 hour of sitting without pulli...

Unless I pull fuse #37 Injection System under the hood. My battery goes dead with in a day.
If I pull it battery never goes dead. Any ideas?