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Neville nesbitt 16th November 2016 07:40 PM

anybody-in-USA-have-a-pair-of-orig-type-headlites-I-could-buy-0r-borrow-to-see-if-mine-are-really-no-good-in-my-CAV,-is-it-my-imagination-or-are-the-lights-in-these-cars-really-useless?let-me-know,thanks-to-everybody,[email protected]44-onLong-Island,New-York:stunned:

IanAnderson 17th November 2016 02:33 AM

Re: headlites-for-cav
Compared to modern cars the lights are "useless"

Sort of makes me wonder about the sanity of the drivers doing 200mph at night!

Best improvement I have seen is to fit HID bulbs and units


Veek 17th November 2016 08:14 AM

Re: headlites-for-cav
1 Attachment(s)
The bad news, I looked at HID and LED options and there are clearance problems on my early CAV mono to the back of the fender liner. And with HID it would also require a rewire kit with ballast.
The good news, I replaced the halogen bulb that was in the car for 15 years and noticed the output significantly better. Apparently the bulbs age over time and as my wife reminds me regularly, "many things dim with age...".

When the technology develops a bit more and the cooling assembly gets a bit smaller, I'll probably go to LEDs for the simplicity.

While not a big change, here's the car with one side sporting the fresh halogen and the other the old one.

tractorboy 17th November 2016 09:54 AM

Re: headlites-for-cav
Neville, good to see/hear you're still about and caring for your 40. Just so you know you're not alone, I found the headlights to be as Ian stated....useless on mine also. Pat's suggestion(s) are always worth looking into. Good Luck. Give me a ring sometime so we can catch up.

Canuk40 6th January 2017 04:06 AM

Re: headlites-for-cav
Hi Neville, might be worth checking the voltage at the headlights when on, low beam then high beam. You're looking for 12 volts ignition on or 14 volts with engine running.

The early CAV cars ran the headlight power through the ignition switch to the light switch to the headlights passing through the molex connectors along the way. Lots of opportunity for voltage drop. Also the ground wire were quite light. So I wouldn't blame the lights right away.

If the voltage is down you can put a relay up front in the rad cradle, control the relay with the headlight switch and feed the relay directly off the master battery disconnect switch with a heavy gage wire. Run the relay output to the lights. Also a separate ground lead to the lights that is screwed to the chassis will allow max power to flow to the lights.

The ignition switch bypass relay for headlights has been done to most CAVs, that saves ignition switch failures but not low voltage at the lamps.

No matter what kind of lights you end up with the voltage must be in the 14v range to work properly so it's worth making sure of what you have.


KarlWood 6th January 2017 02:20 PM

Re: headlites-for-cav
This is a timely posting!! I just switched to LED lights in my CAV. They managed to fit inside the existing inside lining and plugged straight into the current wiring. The only thing extra I needed was some little plastic conversion adapter rings to convert from P45T to P43T fittings (that took a little bit of searching to find what I needed!).

The difference (forgive the pun), is night and day! I very nearly hit a wild black pig. This prompted me to look into the change. 70mph and ~70ft before seeing a wild pig gives very very little time to react.

Anyway, the change was very simple, very effective and cost less than $100. I am going to dig out the links for people and a couple of pictures, although the pictures really don't do the change justice.

Another really nice side note is that the current draw is less. I also have LED bulbs on order for the back. They should be here next week.

KarlWood 6th January 2017 02:54 PM

Re: headlites-for-cav
3 Attachment(s)
OK, some pictures (before, after and one of each bulb) and a couple of links:

Converter to accept modern bulbs:

LED headlight bulbs:

Canuk40 6th January 2017 10:12 PM

Re: headlites-for-cav
Talk about a problem solver! thanks Karl. The LEDs have a big advantage in lower current draw. Thanks again Cheers

KarlWood 15th January 2017 10:44 PM

Re: headlites-for-cav
1 Attachment(s)
OK, I have also switched the rear bulbs to LEDs. Again, a big improvement! Here are the bulbs I bought off of Amazon:

JDM ASTAR Super Bright 78-EX Chipsets 1156 1141 1073 7506 LED Bulbs with Projector,Brilliant Red

JDM ASTAR Super Bright 78-EX Chipsets 1156 1141 1073 7506 LED Bulbs with Projector,Yellow

I went with colored LEDs, much better than relying on the color of the lenses with brighter bulbs.

I hope this is useful for someone.



Pilouleshublots 16th January 2017 04:15 AM

Re: headlites-for-cav
Very interesting, thanks Karl. Think I'm gonna try that, as I find my brake lights a little bit to weak to make me feel safe...

Veek 16th January 2017 08:41 AM

Re: headlites-for-cav

Originally Posted by KarlWood (Post 503449)
JDM ASTAR Super Bright 78-EX Chipsets 1156 1141 1073 7506 LED Bulbs with Projector,Yellow


Thanks so much Karl. Did you need to add the load resistor to get the indicators to blink?

KarlWood 16th January 2017 11:34 AM

Re: headlites-for-cav
They plugged straight in with no resistors. I did go with the same bulb for the break light and rear light. Although the existing brake light is as big as the indicator and bigger than the rear light. My thinking was that the two red LEDs will essentially combine to give more light when breaking. It really looks like a modern lighting setup now, especially with the front headlights too. Avoid going for white LEDs for the rear. I bought some and put them in thinking that the lens color would take care of it. Instead it overpowered the lens color. Those were also too weak. I found the ones I linked to Amazon work perfect.

Veek 17th January 2017 04:54 PM

Re: headlites-for-cav
Thanks for the follow up Karl. It definitely looks to be the way to go.

KarlWood 17th January 2017 05:57 PM

Re: headlites-for-cav
And the front LEDs fit within the space available without any changes to the cover in the wheel well. I am very happy with the outcome, especially given how little work it took!

Neville nesbitt 17th February 2017 07:42 PM

Re: headlites-for-cav

KarlWood 19th February 2017 11:56 PM

Re: headlites-for-cav
Let me know how you get on Neville, I would love to know if it helps others as much as it helped mine.

Neville nesbitt 25th February 2017 06:09 PM

Re: headlites-for-cav

tednphx 26th February 2017 02:05 PM

Re: headlites-for-cav
Neville what number mono CAV do you have. My CAV is number 40 and is a twin car to your silver car.

Neville nesbitt 1st March 2017 06:47 PM

Re: headlites-for-cav

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