Question about 2005 Ford Focus
The relay toggles between high and low whenever the dimmer switch is pushed. So you can check everything at the relay socket.
Pull the relay and use the diagram on the side, to understand which 2 sockets are the primary that energize the relay to toggle, and which are the 2 secondary that go to either the highs or lows.
(You can tell you have the right relay because if you pull it, neither highs nor lows should be possible.)
With a test light, then you should see the primary input go high whenever the dimmer switch is pulled.
With the secondary, you can shunt the input to either high or low output, and see the lights change (when headlight switch also on).
Posted on Aug 21, 2010
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Posted on Jan 02, 2017
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