Instrument Panel Lights

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John Vardanian
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Instrument Panel Lights

Post by John Vardanian » Wed Jun 28, 2017 9:13 pm

Can someone please confirm if the instrument lights are independent of the headlight switch? Thanks.

john
PF Coupe

DWR46
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Re: Instrument Panel Lights

Post by DWR46 » Thu Jun 29, 2017 9:26 am

John: On cars of the PF Coupe vintage, there is generally a separate knob that is a rheostat that controls the instrument lights.

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peterp
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Re: Instrument Panel Lights

Post by peterp » Thu Jun 29, 2017 10:20 am

Hi John, I don't know if it's the same on a PF, or even if it has the same controls, but on my 330 GT, the light rocker in the dash turns on the instrument lights, independent of the stalk on the steering column that actually turns on the lights (first detent) and high beams (second detent).

The headlight stalk on the steering column does nothing if the light rocker switch in the dash is off.

Also, the reverse light only comes when the lights are on (back then, the reverse light was there for illumination only, not safety to warn that you were backing up during the day). I think the underhood light and boot light might also only come on when the lights are on, but I'm not positive of that.
Peter P
1966 330 2+2 series 2 #8169

enio45
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Re: Instrument Panel Lights

Post by enio45 » Thu Jun 29, 2017 10:24 am

John, I'm tracing out my wiring now for the Ellena and what i see is that the
dash lights are controlled by a rheostat switch on the dash board.

i have several extras of the these switched in case you need one.

According to the wiring this is independent of the parking and headlamp switch.
Ed Montini
330 GT 2+2 Series II - 8289
58 Ellena - 0855GT - orig drivetrain

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peterp
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Re: Instrument Panel Lights

Post by peterp » Thu Jun 29, 2017 10:33 am

Maybe a less confusing way to say the above is that the dash rocker serves as a "master switch" that turns on the instrument lights and "enables" the headlight stalk.
Peter P
1966 330 2+2 series 2 #8169

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John Vardanian
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Re: Instrument Panel Lights

Post by John Vardanian » Thu Jun 29, 2017 3:21 pm

peterp wrote:Maybe a less confusing way to say the above is that the dash rocker serves as a "master switch" that turns on the instrument lights and "enables" the headlight stalk.
Thanks everyone.

So, Peter, more scientifically, in order for the instrument lights to come on, the headlights have to be on first. Is that correct?

Mine and another Lusso I've checked, the instrument lights are not dependent on the headlight switch. I find this very odd.

john
PF Coupe

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peterp
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Re: Instrument Panel Lights

Post by peterp » Thu Jun 29, 2017 3:35 pm

John Vardanian wrote:
peterp wrote:Maybe a less confusing way to say the above is that the dash rocker serves as a "master switch" that turns on the instrument lights and "enables" the headlight stalk.
Thanks everyone.

So, Peter, more scientifically, in order for the instrument lights to come on, the headlights have to be on first. Is that correct?

Mine and another Lusso I've checked, the instrument lights are not dependent on the headlight switch. I find this very odd.

john
For the 330, there are two switches related to the operation of the lights. A rocker switch on the left of a cluster of 6 or 8 rocker switches in the center console, and then a stalk on the steering column very close to the blinker switch that has 3 detents (headlight off, low beam, high beam). When you turn the rocker switch on in the center console, it unconditionally turns on the instruments lights (with brightness controlled by the rheostat), independent of whether the headlights (controlled by the stalk) are on.

In short:
Rocker off: Everything is off - instrument lights off, turning the headlight stalk switch from "off" to "low" or "high" beam position does nothing
Rocker on: Instruments lights unconditionally on, headlights are only on if the stalk is set to low or high beam position
Peter P
1966 330 2+2 series 2 #8169

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John Vardanian
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Re: Instrument Panel Lights

Post by John Vardanian » Fri Jun 30, 2017 12:33 am

Thanks Peter. The 330 is a little more sophisticated, it looks like.

I was looking at a 250GTE wiring diagram and it looks like the instrument panel is independent from the headlight.

john
PF Coupe

DWR46
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Re: Instrument Panel Lights

Post by DWR46 » Fri Jun 30, 2017 9:31 am

John: PF Coupes and Lussos have INDEPENDENT switches for the interior lights.

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tyang
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Re: Instrument Panel Lights

Post by tyang » Sat Jul 01, 2017 12:42 am

The 330 wiring is VERY different from the 250 cars, especially Peter's SII 330.

Tom
'63 330 America #5053

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John Vardanian
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Re: Instrument Panel Lights

Post by John Vardanian » Sat Jul 01, 2017 1:23 am

Good to know. But, it is very odd in deed. They decided you cannot turn on your fog lights unless your headlights are on first, but at the same time they decided you need the instrument lights on all the time, even during daylight. This is Italian logic for you.

john
PF Coupe

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tyang
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Re: Instrument Panel Lights

Post by tyang » Sat Jul 01, 2017 6:51 am

John Vardanian wrote:Good to know. But, it is very odd in deed. They decided you cannot turn on your fog lights unless your headlights are on first, but at the same time they decided you need the instrument lights on all the time, even during daylight. This is Italian logic for you.

john
Also the engine compartment lights do not go on unless the headlights are on, and if I recall correctly, nor does the reverse light!

Tom
'63 330 America #5053

DWR46
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Re: Instrument Panel Lights

Post by DWR46 » Sat Jul 01, 2017 9:45 am

There is actually some logic to all this. If it is daylight, you do not need a light under the hood to help you see things. When backup lights first appeared on cars, the reason was to help the driver see what was behind him, and NOT to warn others that the car is backing up. So if it is daylight, the driver does not need a backup light.

250GT
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Re: Instrument Panel Lights

Post by 250GT » Sat Jul 01, 2017 10:56 am

The headlight switch is working "over" the Deviolux.
the deviolux get his juice ad soon the lightswitch stand on stand light or road light (dash lights works now)
as soon the light switch is operasting " pull and turn type" the headlight stalk will work.
you can hear some sound when de deviolux switch on ( in a kind of click) .
However but there are some 250gt cars with a foot operating switch on the leftside made by Lucas( main beam) on off type.
the Fog light have a seperate bevertail swich not depending on the light swith has always AC/DC like the cigarette Brico.

John,hope this helps

C.

Ananda
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Re: Instrument Panel Lights

Post by Ananda » Thu Feb 28, 2019 3:39 pm

On my Boano, there was a foot activated dip switch, but it is NOT Lucas. The diameter of the Lucas unit is larger than the hole in the floor of my car. Could be Hella or something else

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