[DeTomaso] headlight motor

[Julian Kift]

I was referring to the '74 which is all stripped down at present. I've never had the GT5 apart, although it is a very early GT5 which I have found tends to bear more in common with an early car than the later ones.

 

I'll now have to check whether I indeed have the larger Bosch replacement headlight motor. My window motors are round, but I don't recall them having the circuit breaker either.
 

Julian


From: MikeLDrew at aol.com
Date: Thu, 9 Jul 2009 13:43:01 -0400
Subject: Re: [DeTomaso] headlight motor
To: julian_kift at hotmail.com; JDeRyke at aol.com; LEVITT1946 at aol.com; detomaso at realbig.com


In a message dated 7/9/09 9 18 47, julian_kift at hotmail.com writes:



On the headlight motor, yes the gearboxes are the same, however, I can assure you my headlight motor is not the same as the window motors, it is a much larger and heavier duty unit.


I assume you're talking about your GT5.  According to the factory parts book and Wilkinson's website, the headlight motor changed on the GT5 after #9306.  Photos of the two are available here:

http://www.panterasbywilkinson.com/webpages/catalog/extra/ill24_52.html?prod_id=16046a

Note that the new replacement early-style motors are flat on two sides; the originals were completely round.

Interestingly, I just discovered that the original headlight and window motors do have a significant difference!  It's something I've never noticed before, probably because many of the cars I've worked on have had motors replaced over the years, and now there is a single replacement part for both applications.

Check out the photo of parts from my stash (that I *still* haven't had time to inventory yet):

http://www.poca.com/index.php/gallery/?g2_itemId=8999

>From left to right, it's a Bosch replacement headlight motor, original headlight motor, and original window motor.  Click in the upper right to view it in full size.

Note that the window motor incorporates a doohicky on the side.  I believe (but am not certain) that this is an internal circuit breaker.  At various points in the past, I recall holding window switches long after the window was fully up or down and hearing a 'pop' from the door; the window immediately worked in the other direction afterwards, so whatever it was, wasn't permanent.  It makes sense to have a resettable circuit breaker in this application as opposed to only a fuse.  It's not necessary in the front because the limit switches (as opposed to the user's thumb) controls when power is removed.

The factory replacement motors that I've seen are lacking the internal circuit breaker (assuming that's what it is).

The American Bosch aftermarket replacement headlight motor is interesting because it's ever so slightly larger, and presumably might have a bit more torque, but more importantly, it's emblazoned with a very legible part number. :>)

http://www.poca.com/index.php/gallery/?g2_itemId=9003

Mike




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