I purchased the boost gauge and the water, i have tried to lite up the gauges with the connector provided with no luck, first i tried the cigarette lighter using the + wire connected to the white wire of the connector for white light for day driving, grounded the gauge to the ground of the cigarette lighter and no luck even so i get juice at the connector, what is wrong ? is any one has an idea..?

 

it could be the "t" connectors not quite doing their job. I had one not cut through the wire all the way, thus not getting the juice needed You could try clamping the connector down harder, try another connector, or just splice and solder the wires together.

 

Might be easier to shave a bit of the sheathing from the wire and tap the wire properly and tape it up..t-taps always bugged me...I didn't want to have to check them if something doesn't work.