I just installed a pair of new fangled 1157 LED replacement bulbs in the
Spitfire rear lamps and noticed a few peculiarities that you may or may not
like to be aware of Whilst they appear to work fine, (one doesnt get to
use whilst nearly enough does one:-}) the cruise control, probably not of
concern to a lot of you on the list ;-}, stopped working I presume that
the unit I have, which has a pretty universal hookup arraignment, one sense
wire to the hot side of the brake, and the other sense to the switched wire
of the brake to disconnect the cruise when the brakes are applied, uses the
resistance or voltage difference in the stop lamp bulbs for sensing, and
apparently the LEDs do convey this difference or its so different that the
cruise doesnt know what to make of it- also the voltage is VERY critical.
Below a certain amount, like when the car has sat unused for a while, the
lamps wont work until the alternator kicks in and ups the voltage to at
least 12 or more ANYTHING below this and they wont light.. I am going
back to the regular filament lamps for now. A pity since I like the idea
of not having to worry about having a blown lamp
That what I have observed, as always your mileage may vary -
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