LED Tail Light Replacement Bulb - Page 5 - Alfa Romeo Bulletin Board & Forums
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post #61 of 81 (permalink) Old 04-12-2017, 08:32 AM
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Osso and everyone,

I just did these bulbs on my '74 .
I replaced my old flasher switch the same day and now the flashers do not work.
if I recall correctly my blinker relay has more wires than what is shown on the orange part, am i looking at the wrong part or do I need to combine some of the connections?

thanks

Nick S.

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post #62 of 81 (permalink) Old 04-12-2017, 02:49 PM
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Originally Posted by ntvnyer View Post
Osso and everyone,

I just did these bulbs on my '74 .
I replaced my old flasher switch the same day and now the flashers do not work.
if I recall correctly my blinker relay has more wires than what is shown on the orange part, am i looking at the wrong part or do I need to combine some of the connections?

thanks
Have you tried reconnecting the old flasher? Assuming that it worked before it should work now too, but with increased flash frequency.

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post #63 of 81 (permalink) Old 04-12-2017, 05:35 PM
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both old and new do not work. I think that either it's the bulbs or I disturbed something in the dash. I guess I will try new regular bubs first and then look for disturbed wires. Thanks for the reply

Nick S.

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post #64 of 81 (permalink) Old 04-12-2017, 06:02 PM
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both old and new do not work. I think that either it's the bulbs or I disturbed something in the dash. I guess I will try new regular bubs first and then look for disturbed wires. Thanks for the reply
Also check the grounds on the tail light assemblies. A connection problem there will resort in no illumination.
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post #65 of 81 (permalink) Old 04-13-2017, 05:56 AM
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I have a Series 1 and Series 2 and both use 4-5 pin relays. As per normal practice, they work both the turn signals and emergency flashers. The S2 one was originally a 5 pin but I got a 4 pin to work since the original is not available anymore.

I replaced all 4 of the bulbs in the tailights on my Duetto with LED. All went fairly well although I had to flip wires around in the wiring plug on the 1157 LED in order to have the parking lights dim and the brake lights bright. Not sure if the bulb was wired wrong or what?

Nick, I assume your lights worked before the LED change? Put the old bulbs back in along with the original flasher relay and this should tell you if it's something other than the flasher. Bad grounds are a real problem but it usually just takes a little sand paper to clean up the connection. Did you just do blinkers and brake lights?

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post #66 of 81 (permalink) Old 04-13-2017, 06:02 AM
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Quote:
Originally Posted by ntvnyer View Post
Osso and everyone,

I just did these bulbs on my '74 .
I replaced my old flasher switch the same day and now the flashers do not work.
if I recall correctly my blinker relay has more wires than what is shown on the orange part, am i looking at the wrong part or do I need to combine some of the connections?

thanks
My 1976 had 3 connections - and 4 wires: where black went to the signal stalk, and black/white went to the hazard switch

I used this flasher: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 - and replaced the arrow indicator lamp with a green LED
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50 years from now - how are we going to restore a "classic" microprocessor based modern car?? Alfas - 1980 Spider, 1987 Milano, 1976 Spider
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post #67 of 81 (permalink) Old 04-13-2017, 06:02 AM
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I did brake/tail lights and the reverse lights. I avoided the blinkers because of the flasher issues. My grounds are good, I cleaned them up while I had the taillight assemblies out. I think my problem will turn out to be disturbed wiring under the dash. I am lucky in that the wiring on my car is not chopped up, but that also means that I am dealing wil brittle old stuff. I will post a solution when I find one.

Nick S.

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post #68 of 81 (permalink) Old 04-13-2017, 06:59 AM
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Quote:
Originally Posted by ntvnyer View Post
Osso and everyone,

I just did these bulbs on my '74 .
I replaced my old flasher switch the same day and now the flashers do not work.
if I recall correctly my blinker relay has more wires than what is shown on the orange part, am i looking at the wrong part or do I need to combine some of the connections?

thanks
If you are using a conventional bi-metalic flasher relay, it will not work with LED bulbs. The bi-metalic flasher relay needs heat to trip the flasher switch. The heat is caused by the current draw of the light bulbs. LED bulbs do not pull the current filament bulbs pull, so the bi-metalic flasher relay will not work.

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Originally Posted by tadslc View Post
I have a Series 1 and Series 2 and both use 4-5 pin relays. As per normal practice, they work both the turn signals and emergency flashers. The S2 one was originally a 5 pin but I got a 4 pin to work since the original is not available anymore.
The multi -pin flasher you mentioned is used only for the emergency flashers, not the turn signals. Please look under the dash of your S1 on the left side of the steering column. You should see a canister with two wires (1 red and 1 black), attached to it. That is the turn signal flasher.

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post #69 of 81 (permalink) Old 04-13-2017, 07:01 AM
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I hate when that happens! Hey Nick, also check that you did not accidentally blow a fuse. I did when I was changing out bulbs for LEDs.
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post #70 of 81 (permalink) Old 04-13-2017, 08:58 AM
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The multi -pin flasher you mentioned is used only for the emergency flashers, not the turn signals. Please look under the dash of your S1 on the left side of the steering column. You should see a canister with two wires (1 red and 1 black), attached to it. That is the turn signal flasher.
Thanks, I'll have a look.

Tad
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post #71 of 81 (permalink) Old 09-05-2017, 09:50 AM
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Roundtail LED upgrade

Just the info I needed to help upgrade my roundtail. I attempted to do this years ago but LED bulbs available at the time were dimmer than stock. I ordered bulbs Friday. Crazy amazon delivered them free SUNDAY am. After a few glitches (broken ground wire in housing, re-broken lens mounts) I got things ironed out. Painted the interior of the sample housing white. Turn signal flashes too quickly so I have ordered two resistors to fix that. Here are links I used on amazon. Some of those links from earlier upgrades in this thread no longer exist.

Resistors:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

turn signals:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Brake lights:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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post #72 of 81 (permalink) Old 09-05-2017, 10:15 AM
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Those LEDs look great.

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post #73 of 81 (permalink) Old 09-05-2017, 11:14 AM
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... Turn signal flashes too quickly so I have ordered two resistors to fix that. ...
Oh, the irony of adding resistors to make the turn signals draw enough current to make the old flasher behave properly Much more light from LED's with less power... I prefer the solution of changing out the flasher can for a new LED-rated module. Make sure those resistors are where they can safely dump some heat.

Love the way the new LED lamps look!
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post #74 of 81 (permalink) Old 05-31-2018, 03:26 PM
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I just went down the path of LUYED turn signals in my '72. I love the light output, but my can flasher wouldn't flash them. So I bought one of the orange AUDEW flashers and ... it won't flash them. They are always on.

Now, some previous owner had rigged the car to use a two-prong flasher instead of three. I haven't completely traced that down yet, but there's a bundle of wires at the output of the flasher, so I have a guess at how it's working (the dash indicator gets lit up when there's draw from either side of the turn signals). I don't know if the dash indicator is LED or incandescent. I'm contemplating going back to a 3-prong unit ... but I'm also wondering if adjusting the flash rate screw on the AUDEW might help.

Thoughts/words of wisdom?

Thanks.
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post #75 of 81 (permalink) Old 06-01-2018, 06:56 AM
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Do you have one of papajamma's circuit schematics for your Spider?

On it, for my 1976 Spider the 3-pin flasher is marked as "C" going to the turn signal switch & e-flasher switch (which sources a "flashing" 12 VDC for the lamps), "R" goes to the indicator on the dash, and "+" to a fused 12VDC.

The cheap CF13 JL-2 flasher for LED loads I used connects with it's "B" terminal where "+" is, "L" on the flasher goes to the "C" connection wire, and (this is the tricky part!!) the flasher's "E" connection goes to the "R" wire... but the flasher draws so little current on "E" that you must use an LED, oriented correctly (+) side to the flasher, (-) to the dash indicator, in place of an incandescent lamp.

I used a 10mA green LED in my indicator lamp holder, and it lights nicely.
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50 years from now - how are we going to restore a "classic" microprocessor based modern car?? Alfas - 1980 Spider, 1987 Milano, 1976 Spider
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