Author Topic: Running lights question  (Read 500 times)

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Offline JDrider

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Running lights question
« on: May 01, 2023, 08:08:17 AM »
I have a 1975 Cb550 K1.

When the headlight is turned on, the two front turn signals also light up.

Is there anything on the rear of the bike that is supposed to light up also?

JD
1975 CB550K1

Offline bryanj

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Re: Running lights question
« Reply #1 on: May 01, 2023, 08:24:25 AM »
Simple answer.   NO
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline madmtnmotors

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Re: Running lights question
« Reply #2 on: May 01, 2023, 08:27:11 AM »
Rear facing running lights in most places have to be red. Rear amber lights are turn only.
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline JDrider

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Re: Running lights question
« Reply #3 on: May 01, 2023, 08:41:13 AM »
Simple answer.   NO

The reason I ask is because it didnt pass inspection because I was told there is supposed to be a running light on the rear.
JD
1975 CB550K1

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Re: Running lights question
« Reply #4 on: May 01, 2023, 08:51:30 AM »
Tag light qualifies as rear running light. Need a different inspector, this one clearly is applying modern rules to vintage bikes. Rear brake light also lights up showing running lamp. So, your 8nsoector has a screw loose. Bike not running doesn't require all lamps required for running. Park lights are a different concept...
David- back in the desert SW!

Offline JDrider

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Re: Running lights question
« Reply #5 on: May 01, 2023, 08:53:39 AM »
So the rear brake light is supposed to light up with the headlight on?
This is what I'm trying to figure out.
JD
1975 CB550K1

Offline robvangulik

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Re: Running lights question
« Reply #6 on: May 01, 2023, 09:02:51 AM »
The rear has a duplo lamp, the 5 watt should light with ignition on (if you do not have a lights on/off switch) en the 21 watt works when braking.

Offline ekpent

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Re: Running lights question
« Reply #7 on: May 01, 2023, 09:03:04 AM »
If the headlight is on the rear brake light should be on in 'running' light mode. Gotta see your rear in the dark.

Offline JDrider

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Re: Running lights question
« Reply #8 on: May 01, 2023, 09:04:40 AM »
If the headlight is on the rear brake light should be on in 'running' light mode. Gotta see your rear in the dark.

Ok, good to know. I will check this.
Thanks.
JD
1975 CB550K1

Offline madmtnmotors

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Re: Running lights question
« Reply #9 on: May 01, 2023, 09:08:30 AM »
If the headlight is on the rear brake light should be on in 'running' light mode. Gotta see your rear in the dark.

Ok, good to know. I will check this.
Thanks.

Correct. The rear tail light is dual filament, one for running light and the other filament lights up brighter when brake is applied. Definitely need a tail light! I have considered converting the rear turn signals to dual filament with red lenses just in case the single rear tail light bulb fails.
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline newday777

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Re: Running lights question
« Reply #10 on: May 01, 2023, 10:40:31 AM »
Simple answer.   NO

The reason I ask is because it didnt pass inspection because I was told there is supposed to be a running light on the rear.
So the running light in the tail/brake isn't working?
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline JDrider

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Re: Running lights question
« Reply #11 on: May 01, 2023, 10:43:31 AM »
Simple answer.   NO

The reason I ask is because it didnt pass inspection because I was told there is supposed to be a running light on the rear.
So the running light in the tail/brake isn't working?

Correct, I will double check this when I get home.

JD
1975 CB550K1

Offline Don R

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Re: Running lights question
« Reply #12 on: May 01, 2023, 11:17:45 AM »
 Yes, a taillight. 
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline bryanj

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Re: Running lights question
« Reply #13 on: May 01, 2023, 12:24:44 PM »
TAILIGHT comes on with headlamp BRAKELIGHT comes on with brakes, 3 wires to rear light
Brown = TAILIGHT
Green  = Ground
Green/yellow = Brakelight.

Buld is a 5/21 w 12volt staggered pin
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Online PeWe

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Re: Running lights question
« Reply #14 on: May 01, 2023, 12:28:08 PM »
When tail light stopped working I usually adjusted brake light to be lit as tail light.

Replaced bulb asap
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline BenelliSEI

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Re: Running lights question
« Reply #15 on: May 01, 2023, 04:28:29 PM »
When tail light stopped working I usually adjusted brake light to be lit as tail light.

Replaced bulb asap

I know a guy that’s so nervous about a burnt out tail light, he lightly silicones a spare inside his tail light lens! I can usually spot it when we’re stopping, even in day light. I just don’t ride at night.