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#1 |
Registered User
Join Date: Nov 2007
Location: denver, co.
Posts: 3
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halogen headlights
i was thinking about getting the euro lights from lmc and was wondering if anyone has them. what i wanted to know was whether the heavy duty headlight harness that they sell is really necessary and if so what do you do about wiring for the marker lamps as it seems it doesnt include wiring for those.
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#2 |
Senior Member
Join Date: Jan 2005
Location: Raleigh, NC
Posts: 894
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Re: halogen headlights
The HD harness converts the Headlight circuit to a more modern relay setup. This does 2 things: 1. Significantly reduces the current running through the headlight switch in the dash, and 2. reduces the resistance going to the headlights from the battery.
This will both make the dash and the headlights brighter as well as reduce the chance of an electrical failure of the headlight switch. If you don't buy their harness, it is at least worth it to make your own. No clue on the lights, hoping someone will chime in because I have been interested in them as well.
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-Chris Building a stripper, one part at a time: 1969 K5, 307, 3spd, 3 seats, hard top. Added Pwr Discs, Pwr Steering, Aux Battery, T-case Skid, Lighted Sidemarkers, HEI, Lock-Right Diff, ECE Class IV Hitch, 32" MT/Rs. Parts to Install: Hand Throttle, Console, Tow Hooks, Dual Horns, AM-FM, Dealer Swing-Away Tire Carrier, Gas Tank Skid. Also building a 1950 Willys CJ-3A and off-roading a 2001 Nissan Frontier on 1-Ton Portals... |
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#3 |
Registered User
Join Date: Nov 2007
Location: denver, co.
Posts: 3
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Re: halogen headlights
thanks for the technical info. the harness is only $30 so i guess its worth buying rather than messing around trying to make my own and hopefully the instructions will be clear enough as to how to deal with the marker lamps.
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#4 |
Fat Fendered Fleetside
Join Date: Nov 2004
Location: WPB, S. FL, USA, Earth
Posts: 718
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Re: halogen headlights
I have had halogens on my truck for a few years. I did not get them from LMC, but they are Hella lenses with 55W (phillips iirc)bulbs. When I got them the lenses were a really hard item to find, now they're pretty common.
Made a big diff, as said above, dash was brighter and so was my view of the road. I made my own harness, at the time it was a real hard to find part..
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71 GMC lwb 56 Big window swb 93 GMC Sonoma (dd) radiused fiberglass fender project for 67-72 |
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#5 |
Registered User
Join Date: Feb 2005
Location: Carl Junction, Missouri
Posts: 2,061
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Re: halogen headlights
i have the halogens. ebay for 10 dollars, 20 to ship.
i upgraded the wiring myself, because i know how to wire up relays, it's that easy. i need to aim them down more, but i broke my adjusters, and need to buy new square plastic nut things at 50 cents each. the lights are brighter, but if i did it again, i'd use a hid ballast and xenon bulbs. ![]() ![]() ![]() |
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#6 |
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: halogen headlights
Personally I think the modern style, replaceable bulb headlights are a waste of money.
If you upgrade your wiring to use relays, and use sealed beam halogen headlights available at ANY auto parts store, you'll be just fine. Replacements are a Wal*Mart away if you break a bulb on the road.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN Last edited by mrein3; 12-12-2007 at 12:01 PM. |
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#7 |
Registered User
Join Date: Aug 2007
Location: Greenfield, MO
Posts: 215
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Re: halogen headlights
Wiring the relays is an extremely easy mod if you have any knowledge of relays. And of course if you dont, why not obtain some!
Here's where I learned everything about relays at. http://www.the12volt.com/relays/relays.asp Its a realy handy site. Basically all you have to do is get two relays and have your dimmer switch on the floor activate the relay instead of your headlights. The relay is basically just a switch and it connects your headlights directly to the battery when they're on. Thus getting rid of large current draws through the old wiring up under your dash and through your headlight switch. It also reduces the resistance to your headlights from the battery which allows a bit more voltage. I read somewhere about if you drop the voltage by 5% to your headlights it can reduce the light output by 15% or something like that. I cant remember the exact percentages. But you can see why every tenth of a volt is nice to have at the lights. Good luck! |
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#8 |
Grease Monkey
Join Date: Oct 2007
Location: Fresno CA
Posts: 750
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Re: halogen headlights
I installed them and they work great. I use the ultra silverstars from sylvania. You will probably have to trim the inside of the headlight bowl.
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Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12 |
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#9 |
Senior Member
Join Date: Aug 2005
Location: OKC, OK
Posts: 2,365
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Re: halogen headlights
LMC relays are crap. Buy them from someone else. The old wiring in these trucks are not designed to handle the loads of halogen or H4 modern lights. They can and will melt down headlight switches.
Mike
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Mike Redpath |
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#10 |
Registered User
Join Date: Nov 2007
Location: denver, co.
Posts: 3
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Re: halogen headlights
this site is a great source of information. thanks again for all the input.
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#11 |
Just here to help
![]() Join Date: Jan 2002
Location: Norwood,Mo
Posts: 3,893
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Re: halogen headlights
Do you or any other vendors carry them?I dont like buying from LMC and i have the lights but i think i need a harness for them to make them better.
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#12 |
Registered User
Join Date: May 2007
Location: Cedar Park, TX USA
Posts: 52
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Re: halogen headlights
I did an H4 upgrade on my '69 Camaro using an APC harness and housings from Classic Industries. They look more OE than the diamond stye housings from LMC and they should fit the same.
I have the full write up with pics here: http://www.camaros.net/forums/showthread.php?t=111105
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Jeff's Current Vehicles: 1989 Turbo Trans Am Pacecar "Life is like racing, it goes by fast and has many turns" |
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#13 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: halogen headlights
matthufham,
Where did you get the connector to fit over the relay? That makes for a slick job. It also looks factory too!
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#14 | |
Senior Member
Join Date: Aug 2005
Location: OKC, OK
Posts: 2,365
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Re: halogen headlights
Quote:
Mike
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Mike Redpath |
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#15 |
Registered User
Join Date: Oct 2006
Location: Elgin, IL
Posts: 658
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Re: halogen headlights
I bought botht the lamps and the harness from LMC for my 66, and it works great. I also purchesed the blue bulbs from lmc for the lights, cause the trks blue. The new harness comes with the relay setup, described earlier, but some wiring is a little funky and not described well in the instructions due to the fact that they are from wherever the hell oversees and they cant spell. If u have a general knowledge of wiring u can do it easily. The problem with the 66 upgrade was that the harness to the headlights only has 2 prongs at the core support for the point, and the new HD harness has 3, which includes a ground for the relays. I dont know what the harness looks like ont he 72's (I have a 72 and never looked), but it should be easy. If you need any help if you do buy it, just PM me...
BRAD
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2000 GMC Sierra EXT Cab Short 4x4, finally mine... 1966 C10 SWB Fleet, 250 I6, three on the tree.... Previously Owned.... 1987 Chevy R10 "Silverado" (at least the badges were) Short Step 350 700r4.... 1972 Chevy LWB Fleet 350/350 EXTENDED CAB ALL THE WAY! .._..~...-...._...____ .._..-...______|_|__\____ ..-..~.|_(O)__|_|__|_(O)] |
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