Spotlight switch wiring gauge query

Oosti

Member
Hi,
Im changing out an ugly switch connected to my spotlights, replacing it with an OEM style push switch but I have one question regarding the wiring.

The wiring coming from the new OEM style switch is much thinner than the wiring in the harness. Is this safe? I don’t want to burn down my car.

The new switch is rated 3A at 12V.
Below is a picture of the setup (I didn’t wire up the earth or the dash light wire).

Also for context, the old switch had 35A 12V DC written on the switch itself
 

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cookie64

4x4 Earth Contributer
Is it switching a relay or straight from a 12v source to the spots?

If it is switching the coil of a relay then the current would be handled by the relay (with a fuse on the feed side of course), if it is the latter then you will need to install a relay to handle to current of the spotlights.

cheers
 

Oosti

Member
Is it switching a relay or straight from a 12v source to the spots?

If it is switching the coil of a relay then the current would be handled by the relay (with a fuse on the feed side of course), if it is the latter then you will need to install a relay to handle to current of the spotlights.

cheers
Yeah there is a relay with an inline fuse between the battery and relay.

Thanks for that mate
 

boobook

Well-Known Member
The safest way to know with an existing wiring, is to measure the current through the switch with a multimeter. If it is through a relay then expect less than 0.1A, if not then 3A wont be enough and you would have to add a relay.
 
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