| Author |
Message |
J.L.Vickers (209.34.24.45)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 24, 2002 - 7:53 pm: | |
This is a question for you electrical folks!
The GMC P8M4905A's have an electronic turn siginal
flasher unit.
The standard bulb is a 1683 24 VDC for a total of 3 per side.
Now if a person changes the bulbs to 24VDC LED'S would the electronic turn siginal flasher unit work?
I have been thinking of converting it to LED's for the stop,turn, and rear tail lamps.
One more thing are the 24VDC LED lights available?
If not.It's easy to keep the regular old lights no problem there.
Thanks J.L.Vickers |
Gary Stadler (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 25, 2002 - 12:14 am: | |
Interesting question!
I changed most of my turn signals to LED but noticed that 100% LED"s don't present a heavy enough load to the clicker to make it click. So I kept the front turn indicator lamps incandescent, and it all works fine. I think it's just something you'd have to test, because there are sooooo many variations on clicker units out there. Most that are set up for incandescents require a heavier load than LED's will provide.
Don't know if 24volt LED's are availiable or not, but the only difference between a 12 volt LED indicator and a 24 volt one will be the value of it's internal resistor(s). If you buy 12 volt units and can get em apart, just look at the resistor value inside and replace it (them) with resistors of twice the value. |
Gary Stadler (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 25, 2002 - 12:19 am: | |
Dang. Something happened to the board lately that makes it impossible for me to edit my posts. Aargh!
I was going to say that it might not be as simple as I suggest to change 12-to-24 volt if the manufacturer has a few LED's or sets of LED's in series inside the unit. Then a little more grokking and dusting off of good ol' ohm's law would be necessary to set the resistor value properly... |
Richard Bowyer (Drivingmisslazy) (66.190.119.82)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 25, 2002 - 5:35 am: | |
A few years ago I found a HD blinker that was operated by a minature motor within the blinker. Do not know if they are still available as I have never had to replace it. The nice thing about it is that it clicks at the same speed, regardless of the load. No bulbs or ten bulbs, it clicks at the same speed.
Richard |
Jason R (24.107.39.46)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 26, 2002 - 6:21 pm: | |
I did a project to test the human perception of different types of light, and LED was significantly higher than incandescent light. For some reason the human brain just picks it up much faster which is why new cars and coaches are using LED's for their lights. They don't heat up like incandescent lights which helps with that quick burst of light they send out, wheras incandescent has to heat up. Some time look at the back of a newer car and I bet you will be able to tell the difference. Someimes the upper window light of cars is an LED, compare the two. If you wire two LED strips together 12 + 12 = 24! Just have one over the other for the turn signal lights on the side of the coach and for clearance lights set them next to each other, it works great and looks sharp two. |
john marbury (Jmarbury) (65.100.118.38)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 26, 2002 - 7:07 pm: | |
Jason,
Would it be possible to post some pictures on the GM board of what you did to wire LEDs or maybe a diagram.
I'm elecrtically illiterate but visual aids might help.
John |
Jason R (24.107.39.46)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 26, 2002 - 9:03 pm: | |
I ran across a neat conversion site that had all types of info about bus stuff. The site is
http://www.the-russells.com/~shepardc/bus/site_map.htm
I hope this helps, I ran my LED's in series to accept 24 volts. I would post a diagram if I knew how to. sorry. |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, November 27, 2002 - 2:19 pm: | |
I wrote this today... gotta scoot, late for a bus trip to Nevada (whoopee, on the road again!!), so I didn't have time to check it microscopically. But it should answer a few questions, and maybe create more. I'll be back in 2 days...
http://www.heartmagic.com/00LEDtalk.jpg
Cheers
Gary |
Buswarrior (Buswarrior) (64.229.214.55)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, December 01, 2002 - 11:36 pm: | |
Hello all.
Many of the LED's have a wide voltage accepting capability and may not need anything other than a straight install.
I am familiar with an MC8 which had a set of the big round LED's installed in the brake light spots and they are still going strong two years down the road. After the unknowing twit of a mechanic installed them ("what do you mean 24 volt lights?") we did the research. The brand in question was good for, IIRC, 5 to 35 volts.
Also, the dash indicator does not work anymore to indicate the stop lights are working, a side effect of not drawing enough current.
happy coaching!
buswarrior |