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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
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PV headlampsViews : 1386 Replies : 27Users Viewing This Thread : |
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Feb 5th, 2024, 17:56 | #1 |
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Last Online: May 9th, 2024 19:58
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PV headlamps
Hi. In my pv headlamps is a large deflector. The H4 bulbs also have their business ends blanked. So, are the deflectors in the lamps redundant, can I remove them, get better light? On main beam there is definite dark spot, beam penetration is cut off.
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Feb 6th, 2024, 02:26 | #2 |
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Last Online: Apr 25th, 2024 13:36
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Location: New Milford, Connecticut
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I have a '57 PV444. It has a six volt battery. The headlamps are integrated - all one piece - no separate reflector or deflector. They may or may not be halogens, but they are very weak by today's standards.
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Feb 6th, 2024, 10:18 | #3 |
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Well, yes, my 6 volt M21’s light is fairly feeble, too! Have you also the 1400 engine?
I guess my lamps are 544, as car is. H4 bulbs. Someone else has told me the deflectors make beam better. . . . ! |
Feb 6th, 2024, 14:51 | #4 |
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Last Online: Apr 25th, 2024 13:36
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I'm still not sure what you mean by "deflectors". I've seen pictures of those "eyebrows" that sit above the headlight, but I'm not sure they will make the headlights brighter.
I would see if you can improve your situation by trying to re-aim the headlights. When I first drove my car at night - fortunately a short drive of about 500 meters - I could see absolutely nothing! I parked the car about 20 feet in front of a wall where I could see the location of the beams and re-aimed the lights. Still not great, but not suicide to drive at night! I also found that I had a voltage drop of about .5 volts across the light switch. You might try to clean your connections at both the switch and at the fuse box. At some point, I plan to replace the switch, but I lost the hardware for the replacement switch and need to fabricate a new nut assembly to hold the switch to the firewall. |
Feb 6th, 2024, 17:53 | #5 |
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Last Online: Yesterday 14:25
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Location: Chatham
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This type of H4 headlamp isn't unusual. Do they have flat front lenses? If so I had a pair in my MKI Golf. They worked fine. The "blanked off" end on the bulbs is normal for H4's. I've not looked in the back of one of this type of headlight but I might expect to see that the back of the deflector is also a reflector. I think it it is to give a sharp cut off for the dip beam. Plenty of dome front H4 lamps are available. Volvo do their own with Volvo logo in the glass but these are expensive. Plenty of cheaper ones, from MGB parts suppliers for example. Some also have a pilot light in and this is a very useful thing to have. With a bit of wiring you can piggy back them into the normal feeble sidelight wiring.
6v Halogens bulbs are available to fit standard lamp units that take H4 bulbs. Worth a try as long as your battery is in good health. Halogens need as close the their voltage rating as possible. Voltage drop isn't good for their efficiency. Use a relay if you want the best results. For the adventurous 8V tractor batteries have been used by some. Certainly gives the starter a boost but I don't know the survival rate of bulbs! |
Feb 6th, 2024, 19:22 | #6 | |
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Quote:
Derek. Yes, flat front glass, no sidelights. |
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Feb 6th, 2024, 22:38 | #7 |
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Last Online: Yesterday 14:25
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Location: Chatham
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Yes you describe the inside of the lamp as I remember it. In fact I think I have one of them somewhere. I wish you luck with those bulbs, especially if you still use a dynamo. Even 100/60 is pushing your luck.
https://www.ebay.co.uk/itm/154581008...EaAtEsEALw_wcB |
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