Service indicator lights

[Contours]

I had always thought that the S.I lights were powered by the rechargeable batteries in the cluster but recently when I was resetting the yellow and red light which had been on for a while, it wouldn't reset. As I didn't want them on all night, I removed the rechargeable batteries as I have these located outside of the cluster but the yellow and red light would not still go out. I had to disconnect the battery to get them off. So it seems these two lights are powered by the car battery or is there a capacitor inside the cluster to keep them on for some time? When I reconnected the car battery today all the green lights were back on and the yellow and red light off so all is well anyway but a strange occurrence. The S.I batteries are 1.2v nicads which were fully charged.

[BenHar]

It is powered by the car battery. The batteries on the board are just for back up when the ignition is off.

Been

[Contours]

Thanks Ben--hadn't known that.