Lights/turn indicator problem


New Member
This is my first post.
I have a 2001 48V Club Car and the lights and turn signals quit working suddenly.
The hot wire(red) to the lighting circuit comes off the second battery and the in-line fuse is OK.
I disconnected the ground wire(black) from the lighting circuit harness and connected it temporarily to the -ve terminal of the first battery thereby putting 16V+/- across the circuit and both lights and indicators work fine.
Can someone advise me how to troubleshoot the wiring or provide wiring diagram.
Many Thanks

We Haul

New Member

Where was the ground connected?