About this 3D model

Just take the + signal behind the ignition to make sure the gauge doesn't stays on all the time. I used this voltgauge: https://de.aliexpress.com/item/32953332461.html?gatewayAdapt=glo2deu I used M3 x 5,7mm fusible threads on Part 1 to connect the two parts. Notes: Position the parts as they will be mounted later. Part 2: Use supports only on this part and make sure that support roof is activated to ensure a good surface on the curve and easy removal of the support. Even if there is not a big load on the component, I recommend printing with PLA+ or better PETG to counteract effects from the sun.