My bow thruster started to be intermittent at the left control position. It soon stopped at both right and left. Any suggestions at where to start troubleshooting? The unit is 8 years old, but has had limited use.
The contacts on the relay sometimes corrode and need cleaning up. http://www.marinepartsexpress.com/VP_Schematics/Quality%20Line%20Marine%20Accessories/QL_PARTS_LIST.pdf