VDO Water Temp Gauge Install.

[jayg48anglia]

Looking to replace the water temp light on my M1028A2 and bought a VDO gauge. The sensor came with 3 brass adapters for the sending unit. The 1/2 is too big and the 3/8 is too small. Metric? The truck is an 1986. Thanks.

 

[vanaisa]

What instruction manual says? There must be adapter sizes...