The Ford Barn

roccaas · 09-27-2010, 06:23 AM

Signal STAT 900 wired to specifications. Using LED tail lights (night driving).

Cowl lamps (incandescent) work well. Right rear LED works well on BRAKE and TURN.

Left Rear works well on BRAKE, but TURN is very weak. When the headlamps or driving lamps (Cat Eyes off the separate COWL wire) are on, the Left TURN signal is practically impossible to see the flashing.

I have the wire splice near the Brake Switch.

Is it the LED's lack of respect for Dr. OHM's law that causes this? Is there a fix. I'm using the Mark One Left Arm out of the window to signal a Left turn currently.

Thanks
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Mike · 09-27-2010, 06:26 AM

Sounds like you have a bad ground in the laeft tail light. Remove lens add a jumper wire to the socket and a good ground and see what happens.

1931 flamingo · 09-27-2010, 07:22 AM

Ditto
Paul in CT

Mike V. Florida · 09-27-2010, 07:34 AM

Or wrong size bulb

1931 flamingo · 09-27-2010, 07:38 AM

MIKE LED's

ford1 · 09-27-2010, 09:28 AM

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my guess like the others is a bad ground, remove tail lite and clean the mounting surfaces to bare metal, but the problem could be anywhere from the switch to the lite, a bad connection, pull the bulb and check voltage at the lite, are both tail lites the same brightness with the tail lites on? if one is brighter you may have a wire crossed, you need grounds to the engine, frame and body, all clean and tight

Big D · 09-27-2010, 12:59 PM

Where everyone says bad ground.. I will also add in bad wire to ground... Had a truck once that the wire got cut someway inside of the outer coating and after following evryone's "sounds like a ground problem" finally found it was a ground WIRE problem... good luck wiring problems are always more work than they appear.

D

MikeK · 09-27-2010, 01:42 PM

Try switching the left and right LED units and see if the problem stays on the left side or moves with the LED.

Dennis L Oberer · 09-27-2010, 05:47 PM

When I put directionals on the Coupe I ran a separate ground wire from a hold drilled into the separator that is inside the tea cup and thence to a good frame ground.

I will cover this all on the article I am writing for the Jan/Feb issue of the Restorer about installing directionals includind LED tail lights on the A.

Dennis L Oberer
Green Bay WI

09-27-2010, 06:26 AM	#2
Mike Senior Member Join Date: May 2010 Location: ASTON, PA. Posts: 725	Re: Left rear turn signal is very weak?? Sounds like you have a bad ground in the laeft tail light. Remove lens add a jumper wire to the socket and a good ground and see what happens.

09-27-2010, 07:22 AM	#3
1931 flamingo Senior Member Join Date: May 2010 Location: new britain,ct 06052 Posts: 9,393	Re: Left rear turn signal is very weak?? Ditto Paul in CT

09-27-2010, 07:34 AM	#4
Mike V. Florida Senior Member Join Date: May 2010 Location: South Florida Posts: 14,054	Re: Left rear turn signal is very weak?? Or wrong size bulb __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II

09-27-2010, 07:38 AM	#5
1931 flamingo Senior Member Join Date: May 2010 Location: new britain,ct 06052 Posts: 9,393	Re: Left rear turn signal is very weak?? MIKE LED's

09-27-2010, 09:28 AM	#6
ford1 Senior Member Join Date: May 2010 Location: oroville ca. Posts: 1,554	Re: Left rear turn signal is very weak?? Sponsored Links (Register now to hide all advertisements) my guess like the others is a bad ground, remove tail lite and clean the mounting surfaces to bare metal, but the problem could be anywhere from the switch to the lite, a bad connection, pull the bulb and check voltage at the lite, are both tail lites the same brightness with the tail lites on? if one is brighter you may have a wire crossed, you need grounds to the engine, frame and body, all clean and tight

09-27-2010, 12:59 PM	#7
Big D Senior Member Join Date: Aug 2010 Location: Huntsville, AL Posts: 102	Re: Left rear turn signal is very weak?? Where everyone says bad ground.. I will also add in bad wire to ground... Had a truck once that the wire got cut someway inside of the outer coating and after following evryone's "sounds like a ground problem" finally found it was a ground WIRE problem... good luck wiring problems are always more work than they appear. D

09-27-2010, 01:42 PM	#8
MikeK Senior Member Join Date: May 2010 Location: Windy City Posts: 2,919	Re: Left rear turn signal is very weak?? Try switching the left and right LED units and see if the problem stays on the left side or moves with the LED.

09-27-2010, 05:47 PM	#9
Dennis L Oberer Senior Member Join Date: May 2010 Location: Green Bay WI Posts: 179	Re: Left rear turn signal is very weak?? When I put directionals on the Coupe I ran a separate ground wire from a hold drilled into the separator that is inside the tea cup and thence to a good frame ground. I will cover this all on the article I am writing for the Jan/Feb issue of the Restorer about installing directionals includind LED tail lights on the A. Dennis L Oberer Green Bay WI