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#1 |
Just need a couple more parts.
Join Date: Jan 2005
Location: Calgary, Alberta, Canada
Posts: 470
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Good reason to install headlight relays
I have been wanting to install relays on my headlights and finally found the reason for it. The other day I touched the stem on my switch and actually burnt my finger. Normal headlights, by the way.
Anyway, the switch felt like it was toasted, so I replaced it this morning and wired in relays. Check out the switch and how fried it was compared to the new one. White bakelight on the new switch instead of chared like the old. Hole melted in the stem. It melted my harness a bit also, picture 2.
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--------------------------------------------------- 1947 Studebaker M5 project to match the camping trailer. 1950 Chev 4x4 Pickup 1958 Shasta Airflyte Travel trailer (fresh restoration) 1971 C/10 Pickup(Frame off Restoration) 1972 K5 Blazer CST (Daily Driver & My Company Truck) 1976 Honda CB750 Bobber 1988 Jaguar XJ12 |
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#2 |
.....I am working on it.....
Join Date: Jul 2007
Location: Anaheim Hills, Ca
Posts: 960
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Re: Good reason to install headlight relays
Not good. This must have been caused by a loose or dirty connection. The stock headlights draw just over 9 amps, I am sure the switch is rated for it. Dont get me wrong, I swear by relays also, but if your connections are not good, it will happen again.
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#3 |
Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
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Re: Good reason to install headlight relays
Relays allow for the lights to get the full 12 volts available, good idea Vince and none to soon either.
The bigger issue with out set up is the power has to travel the entire harness before it gets back to the headlights, lending alot of different ways to cause melt downs. ![]() |
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#4 |
Its lookin' like a Blazer!
Join Date: Aug 2003
Location: Gods Country, KY
Posts: 1,773
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Re: Good reason to install headlight relays
Post up some pics of your relay install with some info on what relays you used and how you installed them...
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#5 |
Registered User
Join Date: Apr 2006
Location: East Sooke B.C. Canada
Posts: 543
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Re: Good reason to install headlight relays
The front part of the switch is the dimmer for the dash lights. Head light switches have built in circuit breakers, so if it was drawing too much the headlights would turn off and on as the circuit breaker heated and cooled.
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#6 | |
SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,049
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Re: Good reason to install headlight relays
Quote:
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bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L Last edited by bouncytruck; 09-09-2007 at 11:35 AM. |
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#7 | |
Just need a couple more parts.
Join Date: Jan 2005
Location: Calgary, Alberta, Canada
Posts: 470
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Re: Good reason to install headlight relays
Quote:
I added a trouble light out of a 93 chev truck that reels out to the back of the truck and then added the relays. The hood does clear everything but it is close where I choose to install. I wired everything in exactly as per the thread below. There is another thread that uses the same wiring diagram in FAQ also. All the parts are easily availble at your favorite parts store. Yellow wires are the fused power feeds. I used #10 AWG wire which is good for 30 Amps. 30 Amp Relays. I also installed new 3 prong connectors for each headlight. Installed the H4 halogen headlights so that I can put in some extra wattage bulbs (don't tell anyone). Standard is 55 low 60 high. I just happened to find some 100 high 80 low bulbs (these are from an off road dealer). It took me a Saturday morning. http://67-72chevytrucks.com/vboard/s...d.php?t=235214
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--------------------------------------------------- 1947 Studebaker M5 project to match the camping trailer. 1950 Chev 4x4 Pickup 1958 Shasta Airflyte Travel trailer (fresh restoration) 1971 C/10 Pickup(Frame off Restoration) 1972 K5 Blazer CST (Daily Driver & My Company Truck) 1976 Honda CB750 Bobber 1988 Jaguar XJ12 |
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#8 |
Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,505
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Re: Good reason to install headlight relays
Nice work, any chance of water, or will grease solve it. Better looking than your ould headlite switch. Any leads on the H4 bulbs? J.
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#9 |
Just need a couple more parts.
Join Date: Jan 2005
Location: Calgary, Alberta, Canada
Posts: 470
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Re: Good reason to install headlight relays
The pictures show lots of dust on my inner fender so I don't think water or grease is an issue. As far as the bulbs, I got them from a buddy and I think he gets them from a quad/snow machine dealer.
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--------------------------------------------------- 1947 Studebaker M5 project to match the camping trailer. 1950 Chev 4x4 Pickup 1958 Shasta Airflyte Travel trailer (fresh restoration) 1971 C/10 Pickup(Frame off Restoration) 1972 K5 Blazer CST (Daily Driver & My Company Truck) 1976 Honda CB750 Bobber 1988 Jaguar XJ12 |
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#10 |
Its lookin' like a Blazer!
Join Date: Aug 2003
Location: Gods Country, KY
Posts: 1,773
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Re: Good reason to install headlight relays
Looks good to me.... I've been wanting several of those trouble lights for all of my rides.... Nice work....
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#11 |
Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,505
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Re: Good reason to install headlight relays
Thanks, so do your headlites work? Nice fix and thanks for all the information... J.
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#12 |
Just need a couple more parts.
Join Date: Jan 2005
Location: Calgary, Alberta, Canada
Posts: 470
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Re: Good reason to install headlight relays
They do work better.
__________________
--------------------------------------------------- 1947 Studebaker M5 project to match the camping trailer. 1950 Chev 4x4 Pickup 1958 Shasta Airflyte Travel trailer (fresh restoration) 1971 C/10 Pickup(Frame off Restoration) 1972 K5 Blazer CST (Daily Driver & My Company Truck) 1976 Honda CB750 Bobber 1988 Jaguar XJ12 |
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