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| | | | Joined: Nov 2012 Posts: 126 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 126 | After I installed h4 headlights with led halo on my truck my blinkers either blink slow or not at all (light up but solid light//no blink). The speed of the blinkers seems to increase when engine RPM higher. I’m running an led flasher. Have led taillight/blinkers. Blinker bulb in front are normal. Saw something in catalog called led dummy load box. Will this help? Where does it go in the line? Any other thoughts to fix? Thanks!
Last edited by Oregon Tarheel; 03/05/2018 4:59 AM.
| | | | | Joined: May 2005 Posts: 1,624 Shop Shark | | Shop Shark Joined: May 2005 Posts: 1,624 | Make sure you have the polarity correct on your lamps, they are polarity sensitive. Also, grounds are always important especially when running higher current devices.
Six volt guy living in a twelve volt world
| | | | | Joined: Nov 2012 Posts: 126 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 126 | | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Increase with speed indicates voltage drop, do you have large enough wires with a relay close to the lights-look here for relay discussions.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Nov 2012 Posts: 126 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 126 | I’ll check. If headlights are on separate fuse, will they still affect blinkers? | | | | | Joined: Jul 2000 Posts: 2,204 Insomniac | | Insomniac Joined: Jul 2000 Posts: 2,204 | I'm not sure what you are saying in your original post. Do the blinkers work normally when the headlights are off?
Turning on the lights increases the load on the system, so yes, they can affect the blinkers.
As Ed suggested, increasing the engine RPM allows the charging system to compensate for the increase in load. If the charging system cannot keep up, there may be a problem with it. (generator, belt,, regulator, battery, wiring).
I'd start by testing the charging system. Get a VOM and see what the voltage is at the battery with the engine running. Does the voltage drop when you turn on the lights? (more that just momentarily)
Gord 🇨🇦
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1954 1/2 ton 235 4 speed
| | | | | Joined: Nov 2012 Posts: 126 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 126 | Thanks for the reply. I’ll check the volts w/ lights off and on. Now that you mention it, the blinkers act funky with the lights off. It must be a ground or led load issue. I’ll check the grounds and put leds in front so it’s all the same. | | | | | Joined: Feb 2004 Posts: 29,871 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,871 | Don't forget to top off the blinker fluid!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Aug 2001 Posts: 3,615 Moderator | | Moderator Joined: Aug 2001 Posts: 3,615 | Jerry, You crack me up!!!
See ya at the Homecoming!!
Don
1967 GMC 9500 Fire Ladder Truck"The Flag Pole"In the Stovebolt Gallery1946 2-Ton grain truck 1946 3/4-ton pickup, 1953 1-ton pickup 1957 1-ton flatbed dually, 1954 Pontiac Straight Eight Of all the things I've lost in my life, I miss my mind the most! | | | | | Joined: Nov 2012 Posts: 126 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 126 | I was a half quart low. Problem fixed | | |
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