DDK - Die Deutschen Klassiker

I am replacing the indicator relay on my '67. The exisiting one has 3 terminals labelled:

31
49
49a

My replacment has the folowing labels:

P
X
L

The circuit diagram on my replacement shows that:

L ..... 'blinklampen'
P ..... earth?
X ..... 'konktolle vom'

Anyone know how the labels on the new relay correspond to the numbers on the old one?

There is no earth on my 67 wiring diagram but on later cars 31 is earth (brown)
49: Red wire to Control Light Relay ('konktolle vom'?)
49a: Black/white/green to indicator switch
C: Blue/white to tacho warning light ('blinklampen'?)

Thanks Nick

In case anyone else buys a replacememnt relay for their swb car here are the results:

X (49)..... red wire (konktoll vom) to the control

L .(49a).... black / white / green stripes (blinkenlampen) to the switch

P (31)..... blue wire to the dash lamp