85 4KQ Light Switch Problems

[Huw Powell]

> Hey All, Long time no list.  Here's a perplexing one for all the
> gurus.  Does anyone know what the red wire that goes into the light
> switch is for?

yes, it supplies battery power for the three parking light circuit
outputs (these comprise the four small pins in a row on the switch I
think)

>  I have been having a problem with the switch getting
> hot and melting only the tab that connects to the red wire
> subsequently causing the dash lights to not function.

See? The dash lights are part of the parking light circuit...

Something about that circuit is drawing too much current, you can try to
find it, and/or use a relay for them.  instal it behind the inst
cluster, take the three variously striped grey wires (I think they are
grey...) and switch red wire power to them using a remaining good output
from the switch connector.  This may require installing one more
connector and switch if the last ones you had have been killed.

as a PS, that power feed provides power to all four headlight filaments
when you "flash to pass" - that's one way to draw a lot of current there
and melt things up a treat.

-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/