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LED taillights and Cruise Control - where to add resistors? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHLED taillights and Cruise Control - where to add resistors? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Disconnect while

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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed · Original poster
But that was after the battery was disconnected for a while.
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LED taillights and Cruise Control - where to add resistors? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'Disconnect while' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Disconnect while' (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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Frequently discussed actions (1)

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Disconnect while

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
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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.

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Performed · outcome unconfirmed · Original poster
But that was after the battery was disconnected for a while.
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LED taillights and Cruise Control - where to add resistors? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

1 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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A few times I managed to actually use it - it worked OK, controlled the speed as intended.
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POST 1 / ORIGINAL POSTEROriginal post

So my 2003 Boxster was equipped with LED aftermarket taillights by the previous owner. The center stop light had few light bulbs burned out, so I swapped them for LEDs as well. Now it is very bright. In the meantime I added CC and OBC. OBC works OK, CC - not so much. Finally when I activated it via Durametric, it shows up on the dashboard, but once I start the car, it will disappear. A few times I managed to actually use it - it worked OK, controlled the speed as intended. But that was after the battery was disconnected for a while. And then, the next trip the CC would "trip". From what I gather - and it has happened before in my other car years ago - Cruise Control dislikes LED taillights, because it does not see enough load. Hence, resistors are needed. Sure, I added 2 resistors (one per side) on the brake light circuit, by the light assembly. Each is 8 Ohm, 25 W. 8 Ohm resistor at 12 V would mimic 18 W, at 14 V it would be close to 25 W, so like a light bulb, right? Still, CC does not like it. Do I need to add another one to the 3rd brake light? Or what? Make them larger? Any suggestions?

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