[DeTomaso] Head Lights - Trouble shooting

[Dan Mixon]

Late US '74's have a different headlamp relay. They also have a circuit
breaker under the dash in the power wire between the connector block and the
headlamp relay. Service Bulletin No. 14, Article No. 117 covers this
installation. My car has this installation and the Rick Mosley headlight
relay installation wouldn't work until I changed the wiring to the earlier
headlamp relay configuration.  

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of MikeLDrew at aol.com
Sent: Monday, July 28, 2008 4:01 PM
To: charlesmccall at gmail.com; guson at home.se; detomaso at realbig.com
Subject: Re: [DeTomaso] Head Lights - Trouble shooting


In a message dated 7/28/08 13 54 48, charlesmccall at gmail.com writes:


> ***Without knowing how the switch is actually wired, this would coincide
> with our experience, Mike, in a failing switch. You'll recall my headlight
> action in the death throes of my headlight switch - when it failed, the
> headlights went down and wouldn't go up again.
> 

Ah yes, I forgot about the existence of the headlight bucket raising relay, 
on the relay panel.   I guess turning the headlight switch 'on' powers the 
relay closed, and power flows to the up side of the motor, until the limit
switch 
is depressed and the ground is removed from the motor, stopping it.
Turning 
the headlight switch 'off' (or alternately, having the switch fall apart 
internally) removes power from the bucket raising relay, which then opens
it, 
allowing power to flow to the 'down' side of the motor until *that* limit
switch is 
depressed.

I know the headlight motor relay is a complicated thing, not a simple relay 
as used for the horns, fans etc.   I've also been told by several 
electrically-inclined people that ALL Panteras were mis-wired at the
factory, so that the 
wires connect to the relay in a different manner than the wiring diagram 
indicates.   It's wired 'backwards' or something, and still works properly,
but it 
isn't "right".   Rick Moseley switched my wires around so that my car
matches 
the diagram--and everything still works perfectly.

Well, for now anyway...:>)

Mike


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