Hello, I am performing one experiment in which I am controlling the switching of Batteries via a contactor (12V) and the supply from the battery is provided to the circuit inside. During some tests due to some wire harness failure there was some short circuit in the system and the contactor got impacted but still its working (showing complete 12V). Now again when the contactor is switched the battery turns on suceessfully but due to some reasons there is some voltage with respect to the chassis (metal body) ground inside which the contactor and the circuit is present and the positive of the battery. Can anyone tell the possible root cause for this and how do I overcome this issue. Thanks