Part Nos for Front indicator/sidelight 940? - Bizarre!

[griston64]

I have both bulb holders and a clear sidelight if you want it all

Cheers

Mark

[eeedelli]

Originally Posted by griston64

I have both bulb holders and a clear sidelight if you want it all

Cheers

Mark

Great! I've just PM'd you.

[kelvinp]

Originally Posted by Laird Scooby

First, it's not that uncommon for the plastic retaining tab to break off with age and the cluster to fall out. Second, the sidelight bulb on the 740 is a twin filament 21/5W, the 21W part for the day running lights and the 5W for the sidelights (which turns the 21W filament off when the sidelights are switched on) and lastly, were you aware you can buy orange bulbs with "straight" pins (i.e. not offset at an angle like the later type) .

|The early 740s might have had 21W DRLs but side lights on facelift 740 models are on single 5W filaments, I wonder if this is because they went on to 'dim-dip' headlights?

[Laird Scooby]

Originally Posted by kelvinp

|The early 740s might have had 21W DRLs but side lights on facelift 740 models are on single 5W filaments, I wonder if this is because they went on to 'dim-dip' headlights?

Absolutely spot on, yes. Up to the facelift point, 740s had 21/5W bulbs in the sidelight position on the front. The DRLs (or Guiding Lights as they call them in Sweden) used the 21W filaments and when the sidelights were switched on, the 21W went off and the 5W came on.

If the engine was running, or at least had the ignition on, the dim/dip system brought the headlamp dipped beams on at reduced brightness in adition. As such, the DRLs became redundant so 5W single filament bulbs were fitted inthe sidelight position on facelift 760s from 88 and 740s from 90, all 9xx followed this pattern as well.

Mandatory dim/dip which was a UK law was repealed some time around 1990 (only 4 years after it first became effective) because the EU complained and forced us to repeal it. However, they didn't stop manufacturers fitting it, it just didn't have to work at MoT time anymore and wasn't necessary to be fitted to new cars.
Volvo kept it as did many others and then the EU issued a Directive (aka "Law") that all new cars from 2011 (can't remember the month) had to have LED DRLs.

Then we got "Switchback DRLs" where the DRL also served duty as an indicator, the DRL switched off while the indicator was in use and stayed off for a few seconds after the indicator was cancelled.
After some modification of the housing, i've retrofitted a set of these to my 1994 Rover, it's certainly improved the visibility of it during the day!

As i have clear front indicators on my 760, i'm seriously thinking of fitting a pair in the indicator slots so with no indicators i have a "double-height" DRL and when the indicators are in use, the top remains as a DRL but the bottom flashes orange only.

Just need to find some twin filament bulb holders that fit the indicator holes!

[jpliddy]

Originally Posted by eeedelli

Hi folks,

I suffered a completely bizarre situation last week in the gales. Part-way through my journey home, I appeared to suffer a blown indicator bulb. (Fast flashing.) On reaching home, I walked round to see which bulb had gone, only to find that the entire n/s/f corner lamp cluster had disappeared!

This was in the huge storm and I was battling to keep the car on the correct side of the road from the massive gusts as I came along the coast road. I can only assume that the lens unit had been blown out during one such attack, leaving just the wiring connectors dangling through the hole. (I've not had that lens out since I got the car but I can only assume that the previous owner had broken the plastic retaining tab securing it to the wing. Nonetheless, a pretty astonishing event!)

Anyway ... I can get a new lens unit easily enough but they don't come with the bulb-holders and I'm struggling to work out which ones I need (and to see whether they're still available.) They're the last of the line clear lenses so I need the sidelight bulb-holder (probably common from the days of the 740) and the holder for an orange-coloured bulb (which has the bayonet pins offset to prevent a clear bulb being fitted).

Does anyone have access to VIDA or whatever to look it up? I've tried the usual US sites but the line drawings make it impossible to know whether it's a clear or orange & clear split version and they seem to have a single combined lamp anyway over there, so that's no use.

Thanks,
David.

hi my 940 lens did exactly the same after i accidentally snapped the centre spigot of . the lens only stayed attached to car by wiring connectors any way i seem to have fixed it with a nice nylon wedge with serated edges that i use in my line of work sometimes all good now !