Trying to help a guy out in a nearby town and rode down to check it out this morning. Seems he tried to use a booster pack to start his S500. Now when you follow the procedure in the manual for jump starting it does nothing but blow the yellow fuse as pointed out in the picture. Does anyone know what circuit this fuse is protecting? Also, is 20amp the proper rating. We could not find the fuse chart for the car. Any wiring schematic or fuse identifier would be appreciated. I'm thinking this is an over voltage protection relay board that the fuse is plugged into. Does anyone know the proper name for it?

tia

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Jim