[DeTomaso] Headlight circuit breaker

[Dan Mixon]

Mike,

The circuit breaker installation is covered in Technical Service Bulletin
No. 14 Article No. 116. The headlight motor relay and wiring change is
covered in Technical Service Bulletin No. 14 Article No. 117. Article No.
117 applies to late 1974 models. The headlight motor relay and wiring is
different. The wiring diagram for the new headlight motor relay and circuit
breaker is in the TSB's.

Dan 

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Mike Scardina
Sent: Monday, June 23, 2008 10:30 PM
To: detomaso at realbig.com
Subject: [DeTomaso] Headlight circuit breaker

This is my first posting.  I've been a reader and big fan of the list and
all of your advice and commentary for a few years.  Thanks for that.

I have a 1974 GTS #7204(www.panteraplace.com/page143.htm)and recently
started having an intermittant electrical problem... a periodic lack of
battery power going to various circuits.  I've referred to the wiring
diagrams and schematics at Panteraplace and think everything seems to point
to a switch problem similar to the one discussed here earlier in the month
with Scott Carpenter.  Before I attack the switch I plan to look at a few of
the other items suggested in those previous postings.

One of the symptoms I had was a buzzing of the headlight motor relay
whenever there was no power going to the starter and various other circuits.
Having studied the schematics, I noticed that my headlight motor relay was
wired differently than the schematics.  On my car, the red and black wire
was totally disconnected (hanging loose) and there are three black (ground)
wires leading to the headlight relay, rather than one as suggested by the
schematics.  Remarkably,  when I'm not having the intermittant loss of
electrical problem, the headlights work perfectly!  I plan to compare all of
the relay wiring to the schematics and see if changing it makes a
difference.

Another difference I noted was that my car appears to have a circuit breaker
in the headlight circuit.  I can't find a wiring schematic that shows that.
However, I assume it is an OEM part.  I see one listed on various Pantera
parts lists as part 15045A.  I simply want to make sure it is wired
correctly since it appears someone in the past has messed around with some
of the other wires which appear to be connected to the wrong terminals.
There are two terminals on the circuit breaker.  The way the circuit breaker
is wired on my car is that a black ground wire goes to one of the terminals
and two black wires come off of the other terminal and those two wires lead
to two separate terminals on the headlight motor relay.  The schematics
typically show just one ground wire leading to the headlight motor relay.
Are any of you familiar with this circuit breaker and how it is supposed to
be wired?

Best,
Mike


      
_______________________________________________

Detomaso Forum Managed by POCA

Archive Search Engine Now Available at http://www.realbig.com/detomaso/

DeTomaso mailing list
DeTomaso at list.realbig.com
http://list.realbig.com/mailman/listinfo/detomaso