I made the following harness to draw 12 v from the battery for my GPS or for recharging the smartphone. The connector is useful also to connect a battery charge mantainer during periods of long non-use.

The 10 A large fuse is mounted on two faston connectors. The output is a 180923-0 TE Connectivity 2 way female unsealed faston connector.

The eyelet terminals connect directly to the battery, the connector is reachable near the main beam of the motorcycle frame, on the left side.