Thermo Vaccum Switch Questions

[jim blanton]

Morning all....we are abt to order some new thermo vaccum switchs
for the Nov 1980 380SL...I mean the pair that are on the front of the
engine top side...with a pair of connectors coming out for vaccum
lines...according to the manaul they are 50C...I have seen both red
and yellow versions...which is right...before we make the order.

Thanks

Jim in Texas