A possibility to consider is to use the "upgrades" as the reference when substituting LED bulbs, which run much cooler and consume much less power. They are also more expensive, but you'll, probably only need to pay for them once.

On Jul 31, 2011, at 11:38 AM, Robert Stevens wrote:

>>
>> At 09:11 AM 7/31/2011, craig cowan wrote...
>>> I plan to put all new bulbs in my syncro, will the upgraded ones all
>> work, or will they melt housings?
>
> They did begin melting my tail light housings. I relegate "brighter" bulbs to brakes
> and back-up only because of it. Anything that comes on for short durations should
> be OK and easier to see.
>
> bob