602 Glow Plug WIRING - temp

[huntercody]

Hey,

I have a om602 from a 1991 and the temp sensor wire going from the passenger side sensor runs into the relay, but my question is does it also pass through from the relay to dash water gauge? If so, is it the solid brown lead coming out of the relay?

BTW, anyone replace their oem gauge with aftermarket gauge? Brand used?

Thanks