Interesting thread. I would like some brighter bulbs for my 81 CJ, but am not interested in a major overhaul, relays, etc.. Don't really have the skills or time to invest at the moment. Are there any good "plug and play" bulbs that would work as replacements for my factory style bulbs? Just looking for something brighter that will plug in and not need other upgrades, second battery, etc..
The headlight switch is the limiting factor. It is just barely strong enough for regular bulbs, even halogen bulbs will cook the switch contacts and get dimmer and dimmer until the breaker blows.
Relays give direct power to the lights and make them super white, then you can even up them to nice halogens.
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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Thanks man. I appreciate the rationale for relays. Honestly, don't know much about wiring and find the project a bit intimidating. Sounds like a worthwhile upgrade though. I would love to have some brighter lights on my Jeep, if nothing else to reduce the likely hood of hitting a deer and such on the country roads near home.
Could somebody please point me to a product page on eBay which has a headlight relay wiring harness that would work with my Sylvania SilverStar H6024ST sealed beam headlights? I'm getting confused with the many options of H4, 9006/7/8, HID, etc. I'd like these to be weatherproof, if at all possible.
ok back in the states got lights in jeep and ordered a h4 male end to hook up to the truck light led's got one on last night trying to find the camera. the question now is should i upgrade all the wiring also as these dont draw as much power as the old ones or what
With an LED current is dependent exponentially on the voltage in the diode. This means that a small change in voltage can cause a large change in current.
If the maximum voltage rating is exceeded by a small amount, the current rating may be exceeded by a large amount, potentially damaging or destroying the LED.
The typical solution in electronics is to use constant current power supplies, or driving the LED at a voltage much below the maximum rating.
Since your Jeep battery/alternator/voltage regulator system is not a constant current source, does your LED fixture include a power converter?
Just interested in how it is going to handle the voltage changes. These LEDS are more sensitive being semiconductors than the incandescent lamps or the HID discahrge lamps.
The voltage at the battery in a standard setup is about 14V with the engine running but out at the end of those little bitsy wires at the headlights drops to nearer 11V, sometimes lower. The lower voltages will protect the lamps BUT the amount of current is exponential to the voltage so the light levels must have a much larger drop.
I do not think it would be a good idea to do the headlamp relay upgrade with LED headlamps and here's why:
You will increase power and you will start pushing the LED bulbs that only draw maybe an amp to each bulb? I have no idea what the exact specs are for the headlamps you installed?
You are going to have to add some resistors in-line to help control the current that you will add, if you do the headlamp relay upgrade?
Grab the volt/ohm meter and start figuring out the current draw.
Hook up your old halogen lamps first and get some current measurements. I wrote mine down before/after and I cannot find my information at this time. Though, I did not do any LED headlamps, I was curious with the upgrade and it made a hell of a difference by adding cleaner, reliable power to the lamps.
I'm not a true electrician techy by any means but it is something that you need to consider and research. Fires Suck!!!!
One would think that the manufacturer has already done their homework on that. It wouldn't take any EE very long to come up with the proper circuit to install a constant power supply inside the headlight powered by the widely varying jeep voltage. Even the new car I'm looking at has LED headlights as an option now and I can hardly believe it's only 3" in diameter.
The power of these LED lights is going up 20% every year. I have a shop across from my office which SPECIALISES in LED lighting solutions, they looked a bit foxed when I asked about 7" lights for a CJ7.
They look like the future, brighter, more efficient, more redundancy, less prone to vibration etc. And they are cheaper than HID.
I would still do the relay and fuse upgrade. If you are spending all that money, I wouldn't want anyhting to burn up or melt.
Just read the link as many times as you have to, to do it. Even though they draw less, the way the wiring is designed originally is very poor. It wouldn't hurt to protect your whole cj from burning up.
The only original wiring you have to clip and splice into are the two positive wires that lead to the headlights on the front of the grill (splice at the front of the grill). On my '84 they were gray, one solid and one with a darker tracer.
ok so bought some H4 male ends to hook into the female end of the CJ Headlight Harness. Looks like the one here im having to cut and mate my headlight wiring to the H4 Male end to plug into the female end. ill take some pics of the Truck light ends. the Million dollar question now is how to set up this upgraded wiring because im the worlds biggest idiot when it comes to electrical and wiring.