RE: [DML] Re: Headlight switch repairs

["John Hervey" <john@xxxxxxxxxxxxxxxx>]

As David and others know I have been repairing headlight switches for 7 +
years as long as they are not missing parts. If you don't add a switch saver
to your original switch or to a repaired switch then count yourself lucky.
They will melt on the inside depending on how long the lights stay on and
how many times you use them.
So if you like the original switch operation and you don't add a saver kit
for $19.95 then you just lucky for now, but it will happen.
John Hervey
www.specialtauto.com
www.deloreanautoparts.com



-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
David Teitelbaum
Sent: Friday, May 29, 2009 8:32 AM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Re: Headlight switch repairs

The design is probably considered a "success" since it lasted over 25 years!
The problem is not only the design (and construction) of the switch but the
circuit itself. The switch carries the direct current of the side markers
and they are fused AFTER the switch so if there is a short circuit in the
marker lights the switch has to carry that whole load BEFORE the fuse will
blow. Not the best way to do it. Using relays will reduce the current
through the switch reducing the heat and helping the switch last a lot
longer. Changing over to L.E.D.'s for the marker lights will also help a
lot. Going with halogen type lights will increase the load so if you go that
way you really should consider relays for the switch to control. You also
should check from time-to-time the marker light sockets. They are prone to
corrode and when they do they can cause a high current through the headlight
switch.
David Teitelbaum
vin 10757




--- In dmcnews@xxxxxxxxxxxxxxx, "dadoc2791" <gekko@...> wrote:
>
> Dave,
> 
> No question that the overall design is poor in regard to the amperage
carried by the switch in the original schematic, but I have about 35k miles
on my car and this is the first time (to my knowledge) it (the switch) has
required repair, so I figure I've been p



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