small switch under the dash

[pj]

There's a small red switch hanging under the dashboard of my car. I can't figure out what it's for. Is it on the wiring diagram, and I'm just not recognizing it? Is it an obvious non-original addition? Any ideas?

I haven't tried to follow the wires in detail. It's mighty congested up there and I don't know how you guys get your hands and eyes in behind the dashboard.

[Peter van Es]

That does not look original... so you'll have to trace the wires... because the switch is so small, it cannot be a high current item (like driving lamps) unless it is driving a relay (check under the hood if you have a non-original relay somewhere). Could it be from an alarm system or immobilizer?

[Larry & Norma]

I have seen a similar switch which turned out to operate the power antenna so if
using an ipod you can lower the antenna. I understand that front fender mounted
antennas create a lot of wind noise which can be annoying when the roof is down.
Obviously not a standard fit.

[w113dude]

might be a kill switch added and connected to electricals in the car.

[Iconic]

How about a cold start device to turn the cold start valve on?
Is it a momentary switch that springs back after you release it or does it toggle and stay where you moved it to?

[pj]

It's a toggle. I haven't done a thorough check of whether the behaviour of other systems depends on which position this switch is in. It's on my list of things to do.