Earthing Dual Batteries and Winch

[LeighW]

As above always run directly to batt

[Ryzz]

100% agree, especially with something that has as much draw as a winch, run positive and negative straight back to battery. Even the second battery is best earthed off the main battery

[D4D]

I would always connect a winch directly to the battery both +ve and -ve.

[Mule]

I have found it difficult to see how the car is earthed. Wondering if the body and/or chassis have a healthy earthing somewhere that I can't see. I am in the process of wiring my winch and a duel battery system. The negative wire on the original battery seems a bit puny so I wonder if it is safe to run a winch other than using a direct to battery negative connection. In the same vain how are people making an earth connection for a second battery