[DeTomaso] Headlight circuit breaker

[Mike Scardina]

Perfect! I was hoping and somewhat expecting that this was
a legitimate change since everything seems to work...
although intermittantly.  Thanks for the lead, Dan.    

--- On Tue, 6/24/08, Dan Mixon <tipo874 at comcast.net> wrote:

> From: Dan Mixon <tipo874 at comcast.net>
> Subject: RE: [DeTomaso] Headlight circuit breaker
> To: a42n8cfo at yahoo.com, detomaso at realbig.com
> Date: Tuesday, June 24, 2008, 11:55 AM
> 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
> 
> 
>       
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