Check engine with trailer connected
Huw Powell
audi at mediaone.net
Sat May 5 00:32:38 EDT 2001
Larry Newman wrote:
>
> Mark - Do I understand this converter to use the signal from the
> directional/brake/parking brakes to activate the relays which direct 12V
> from the battery to the appropriate trailer bulb? And this circuitry
> doesn't convince the Audi sensors that something requiring a warning is
> happening?
if they are solid state, and I bet they are, their input impedance will
be very high, so they will draw a miniscule amount of current to trigger
- so they will not "alarm" the cars whiny little protection circuitry.
re: the $6 Walmart unit - it probably *is* the same sort of thing - but
it may only be for one circuit, eg a US/Euro brake light/turn signal
adapter. i suspect, or at least would hope, that a $40 thing would
isolate *all* the trailer power from its triggering sources.
>
> Larry
>
> I would suggest a standard converter box. They range in price from $29.
> to
> $59. and are wired up to the factory lights, but also to separate ground
> and
> +12V power. The lights then just activate solid state relays and not
> the
> lights themselves. Most European cars are MUCH more happy with this,
> and
> you'll see why if you look at the wire gauge size running most tail
> lights.
>
> Mark Rosenkrantz
> AudiBiTurbo at aol.com
--
Huw Powell
http://www.humanspeakers.com/audi/
http://www.humanthoughts.org/
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