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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

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YOUR RESEARCHWeird light

Leading reported evidence

Install minature 12 volt relay

Performed · outcome unconfirmed

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Unsuccessful attempts: 1
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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed
In order to use LEDs in my high mounted brake lights I installed a minature 12 volt relay with the normally closed contacts connecting a 20 watts halogen across the circuit.
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Leading evidence: 'Install minature 12 volt relay' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install minature 12 volt relay' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Install minature 12 volt relay

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed
In order to use LEDs in my high mounted brake lights I installed a minature 12 volt relay with the normally closed contacts connecting a 20 watts halogen across the circuit.
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7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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Didn't say the LEDs didn't work, they just don't draw enough current to allow the cruise control to be enabled.
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Generation: 20261026T212127Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi everyone I just noticed that when my engine is off, i noticed a red light coming from the brake light on the spoiler. It is the brake light on the spoiler that pops up at 120km/h. It is the right most section that stays on. Is this normal?????? or bad wiring???? thanks Chucksta

POST 2Original post

That doesn't sound right to me... mine don't do that. Sounds like bad wiring, did you install one yourself? Won't that happen if the polarity is reversed?

POST 3Original post

When the key is on the high mounted brake light has a "keep alive" voltage. It may be that some of the bulbs are out and the few left have to take up all of the keep alive voltage. The keep alive voltage is a hold over from the very first electronic cruise control design, Ford in the sixties. It's purpose is to be certain the brake application is detected by the cruise control electronics. IF you have cruise control you may notice it doesn't work if the higher wattage OEM bulbs (W5W) are not used and all of them work. If by chance you have switched to LED bulbs this will definitely be a problem. In order to use LEDs in my high mounted brake lights I installed a minature 12 volt relay with the normally closed contacts connecting a 20 watts halogen across the circuit. With 12 volts (brakes) applied the relay picks up and opens the halogen circuit and only the LEDs illuminate.

POST 4Original post

That's odd. My LED's work just fine with no relay.

POST 5Original post

Didn't say the LEDs didn't work, they just don't draw enough current to allow the cruise control to be enabled. Cruise control system "thinks" the brakes are applied.

POST 6Original post

OK then, my cruise works fine with the LED's and no relay.

POST 7 / ORIGINAL POSTEROriginal post

so is it normal? or should i chuck a wobbly to the dealer??

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