Fox T-Bird/Cougar Forums

Technical => Electrical Tech => Topic started by: V8Demon on April 08, 2014, 05:18:56 PM

Title: OK. I'm either blind or....
Post by: V8Demon on April 08, 2014, 05:18:56 PM
Who knows.....


Anyway, I scored a N.O.S. underhood light and wiring harness for my car.  In the entire time I've owned it, it never had one.  My old 87 3.8 did, but that was 17 years ago....  I cant remember for the life of me how the  wire was routed and can't seem to find where the harness plug in....

Anyone?
Title: OK. I'm either blind or....
Post by: MY83T on April 08, 2014, 05:20:41 PM
Quote from: V8Demon;431978
Who knows.....


Anyway, I scored a N.O.S. underhood light and wiring harness for my car.  In the entire time I've owned it, it never had one.  My old 87 3.8 did, but that was 17 years ago....  I cant remember for the life of me how the  wire was routed and can't seem to find where the harness plug in....

Anyone?

Call me later i can send you a pic of the part where the harness connects to.....
Title: OK. I'm either blind or....
Post by: V8Demon on April 08, 2014, 05:32:28 PM
ok
Title: OK. I'm either blind or....
Post by: mcb82gt on April 08, 2014, 07:18:22 PM
Somewhere back by the passenger side firewall.
Title: OK. I'm either blind or....
Post by: V8Demon on April 08, 2014, 09:00:24 PM
Hmm.  I saw where Dave's cam out.  Pretty sure mine is clipped.  Too dark to check right now.  The light is tripped by a mercury switch, yes?  I'm guessing it's built into the bulb housing?
Title: OK. I'm either blind or....
Post by: thunderjet302 on April 09, 2014, 03:16:21 PM
Yep the light is tripped by a mercury switch like the trunk light. The switch is in the bulb housing.
Title: OK. I'm either blind or....
Post by: V8Demon on April 09, 2014, 04:50:59 PM
Good deal.  Anyone have a pic of the correct location for the light itself mounted on the hood?
Title: OK. I'm either blind or....
Post by: MY83T on April 09, 2014, 11:47:22 PM
Quote from: V8Demon;432026
Good deal.  Anyone have a pic of the correct location for the light itself mounted on the hood?

Paul, it goes on the drivers side of the hood underside.  the plastic sleeve over the wires covers the portion that would be exposed from the wiring harness to where the wire meets the hood insulation.  The rest would be attached to the hood underside and the only parts actually exposed are the light itself through the insulation and the small sleeve i mentioned earlier.  This is a shot of my 83 Bird. The lower harness is in the same spot as here, the light itself is on the opposite side (Drivers) in the same location on the 87 Cougar.
(http://i248.photobucket.com/albums/gg169/my70gt/davids%20thunderbird%20pics/DSC_1183.jpg) (http://s248.photobucket.com/user/my70gt/media/davids%20thunderbird%20pics/DSC_1183.jpg.html)
Title: OK. I'm either blind or....
Post by: V8Demon on April 10, 2014, 12:44:49 AM
Got it.  Now I just need a new 89 bulb.  Almost 30 years of sitting turned the glue on the filament ends to dust.  Now for my BIGGER issue.  I installed the trunk light I got as well.  Nothing.  Testing it with a 9 volt shows it works as it should.  I'll check for power and ground tomorrow.  The plug it goes into should be hot at all times according to the EVTM.  Guess I have a break somewhere......yay.
Title: OK. I'm either blind or....
Post by: MY83T on April 10, 2014, 01:00:54 AM
Quote from: V8Demon;432060
Got it.  Now I just need a new 89 bulb.  Almost 30 years of sitting turned the glue on the filament ends to dust.  Now for my BIGGER issue.  I installed the trunk light I got as well.  Nothing.  Testing it with a 9 volt shows it works as it should.  I'll check for power and ground tomorrow.  The plug it goes into should be hot at all times according to the EVTM.  Guess I have a break somewhere......yay.

I was at Pep Boy's today, they have the hood bulb in stock. Bought 2 for my new harness also.  As for the trunk light, check the fuse panel, and see if there is a fusible link in line somewhere between. Bad bulb perhaps?
Title: OK. I'm either blind or....
Post by: V8Demon on April 10, 2014, 01:05:11 AM
I probably have an 89 in my stash.  As far as the trunk light I tested the harness and the bulb with a 9 volt.  It lights up.  Problem is further upstream.