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Triumph Torque    Chit Chat Boards    Technical Chit-Chat  ›  H4 bulbs/BPF socket
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Jdowson and 13 Guests

H4 bulbs/BPF socket Print
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November 28, 2017, 5:05pm Report to Moderator
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Hi Folks,
              does a H4 bulb fit into an older BPF reflector socket?


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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John Bonnett
November 29, 2017, 5:19pm Report to Moderator

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It's the same fitting as a sealed beam if that's of any help.

La Coupe Florio 2015
GT6 to Spain

Located Whiddon Down Devon
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November 29, 2017, 6:14pm Report to Moderator
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Quoted from Hogie
Hi Folks,
              does a H4 bulb fit into an older BPF reflector socket?


You can still buy halogen bulbs that fit that type of reflector, the H4 normally has 3 locating pins, it will fit the socket but not the reflector.

Cheers, Tony.

PS, Manners sell them.
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Nick Jones
November 30, 2017, 9:33am Report to Moderator

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You are probably better off getting the complete halogen conversion kits as the reflectors and lenses will be engineered to suit the halogen bulbs.  Cibie/Valeo tend to be the best and priced accordingly.  I've had decent results from Ring and Wipac though and they are very reasonably priced.

Halogen or not, headlamp wiring via relays located near the lights (and nice fat wires to the relays) make a huge difference and stop the smoke escaping from your column switch as well  


Nick Jones
Somerset UK

Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017.
GT6 Mk3 Roto - project in progress
Spitfire MKIV son's project now on the road as a daily driver
2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet.  Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea

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November 30, 2017, 10:02am Report to Moderator
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Thanks chaps,
                   that appears to have summed it up nicely.  I'll pass this onto my chum.

The question arose when my friend asked a supplier what he needed to upgrade his TR3 lighting.
He was a little shocked at what was needed.

Simply upgrading the bulb (from BPF ot H4) is not the way to go.


TR4A 1967 daily(ish) driver
TR41962  having surgery at present
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November 30, 2017, 8:04pm Report to Moderator

Colin Wake
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Euro Car Parts have the Cibie ones on special occasionally.

Well worth the money

Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border.

2010, 2011, 2013, 2015 and 2016 CT Navigators Championship winner.

10CR 2005, 2007, 2009, 2011 2013 - RBRR 1990, 2006, 2008, 2010, 2012, 2014, 2016 - Nachtrit 2006, 2007, 2008, 2009, 2012 - Chinese rally 2007, 2008, 2009, 2010, 2011 - HCR 2009, 2011, 2012, 2013 (3rd place), 2014. 2015, 2017

On the road.
1968 Spitfire Mk3 : 1973 TR6 : 1967 Herald 1200 Estate 1970 : 1968 Mk1 2.5PI 1968
Off the road
1967 Moss Monaco (Mk1 GT6 based) : 1970 Spitfire Mk4 : 1970 Mk2 2000 auto  : 1964 Mk1 2000  : Mk2 2.5PI
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