Fog Light Relay Connections

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Wil Mittelbach
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Fog Light Relay Connections

#1 Post by Wil Mittelbach » Sat Jun 09, 2018 2:00 am

Have obtained an original fog light relay for my 356C cab. Its four bullet connector ports have no markings indicating their connections.
As depicted, Ive numbered the relay's ports and believe #2 connects to hi-beam fuse #11, and #4 to fog light fuses #5/6.
Would much appreciate confirmation of the above two connections, plus the identification of each of the relay's #1 and #3 ports (I believe they're for the fog light switch and ground connections ?).
- Wil
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Last edited by Wil Mittelbach on Sat Jun 09, 2018 7:23 pm, edited 1 time in total.

Hugo Karasawa
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Re: Fog Light Relay Connections

#2 Post by Hugo Karasawa » Sat Jun 09, 2018 11:36 am

Here the fog light diagram by Greg Bryan that appeared in the registry's magazine.
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Fog light wiring.jpg

Hugo Karasawa
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Re: Fog Light Relay Connections

#3 Post by Hugo Karasawa » Sat Jun 09, 2018 12:14 pm

I see there are some markings in the relay.
1=57=D
2=31=C
3=30/56=A
4=56a=B

This relay is a Normally Closed contacts relay, it is used to turn off the fog lights if you use the high beams .
It is not used to ease the load on the switch.

If you connect this relay the way you planned the fog lights will not work properly. Again, it is a NC contacts relay.

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Wil Mittelbach
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Re: Fog Light Relay Connections

#4 Post by Wil Mittelbach » Mon Jun 11, 2018 11:30 pm

Hugo Karasawa wrote: 1=57=D
2=31=C
3=30/56=A
4=56a=B
Hi Hugo -
Thanks for the identification of the relay's four unmarked external ports.
Much appreciated.
- Wil

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