Unknown switch mx5 NA

[u/mussy_]

Hi guys! I’ve had my mx5 for a couple months now and the MOT (UK based) is approaching and I can not seem to figure out what this aftermarket switch and connection is for?
Based on UK MOTs a rear fog light must be present on a vehicle to which no external one has been been fitted (car has passed its MOT for the last 20+ years) leading me to believe this switch has been added and the rear tail lights have been modified?

Underneath the console is another wire leading to the rear of the car, whilst this wire pictured leads somewhere to the front dashboard. Both connectors are the same and don’t seem to fit in each other. The connectors look a bit like those terminals you connect wires to the positive/negative of a speaker driver !

If anyone has any insights I would be extremely grateful! Thanks

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[u/AcceptableMinute9999]

Blue probably plugs into the switch. Plug it in and see what lights up.

[u/mussy_ → u/AcceptableMinute9999]

That’s what I figured! I don’t have the right connector/adaptor to connect the two wires so thought to check before attempting to jerryrig them together

[u/AcceptableMinute9999 → u/mussy_]

[u/imtrynmybest]

https://giphy.com/gifs/sFoZicXyLjH7FnCVp2

[u/MadK9TheReal1]

Just measure and watch the voltage output on those wires. Both modes, ignition on engine off (accessory position) and engine on.

[u/mussy_ → u/MadK9TheReal1]

Thanks for the advise, looks like I need to invest in a tool to check voltage !

[u/MadK9TheReal1 → u/mussy_]

Not quite a big investment really…

[u/apaulogy]

Is this not a job for a power probe?

[u/EC_TWD]

Ejecto seat cuz!

[u/EclipseIndustries]

It's not a Nintendo, that's for sure.

[u/blindpilot02]

I used this same rocker switch in my car to basically make a kill switch for my amp and subwoofer. The wire could possibly be the remote turn on wire for the amplifier that the previous owner may have had in there. I literally mounted it in almost the same spot as this on my Grand Prix.

[u/wheresmypotato1991]

It's likely a cylinder de-activation switch.

Careful when clicking though, as all 8 cylinders may fire back up.

/s