-Loosen connection somewhere
-The unit (should be similar to
https://item.taobao.com/item.htm?id=543194418614) wounds physically
http://chinariders.net/showthread.php?t=17413 explains something
-Just a blown light bulb in the dash
Anyway u can mock up
no fuel by a dummy load.
No matter what situation, u need measure electrics w/ multimeter 1st.