Does a 1988 Mustang GT Convertible have a Rear Window Defoger? - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 5 (permalink) Old 06-01-2011 Thread Starter
Apprentice
 
strykerfive's Avatar
 
Joined: Oct 2008
Location: Kaneohe Bay
Posts: 52
 
Does a 1988 Mustang GT Convertible have a Rear Window Defoger?

Does a 1988 or a 1990 Mustang GT convertible have a rear window defogger? The reason I ask is I have found a black female-end connector on the dash harness while doing a dash swap and do not know what it attaches too? The dash swap I did was a 2005 Mustang dash into a 1990 Mustang GT. I also did an engine swap (4 cyl to V8) in which I used the engine harness which led me to use the dash harness from the 1988 Mustang GT donor. I'm in the process of trouble shooting my convertible top and found the connector without anything attached to it. From the 1988 wiring schematics it shows wiring for raising the top up and down going through a rear window defogger relay/circuit breaker. The colors of the wiring for the convertible top shows that it routes through the rear window defogger relay, but I don't have the donor vehicle to verify whether or not a convertible had a rear window defogger. I do have the HVAC controls and didn't see a selector on it for rear window defogging. I didn't think the convertible had a rear window defogger.

If a 1988 Mustang GT does have a rear window defogger, does anyone know the part number or have a pic of the relay? On the 1988 dash, where would the relay be located? I've tried going online to Napa and am having no luck in finding a replacement for the one that I have missing.

I'll be trouble shooting my convertible top wiring tomorrow and will take a picture of the connector.

Appreciate any assistance anyone has on this one.

Semper Fi,
John
strykerfive is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 06-01-2011
Senior Member
4.6L Member
 
red1999cobra's Avatar
 
Joined: Oct 2010
Location: Anywhere
Posts: 2,181
 
as long as the rear window is actual glass, then yes, it has a defogger.

Red 1999 Cobra Vert:

316.6 rwhp @ 6093 rpms
318.1 rwtq @ 4489 rpms

On Just Bolt-Ons And Stock Exhaust Manifolds.

See Profile For Mods.......
red1999cobra is offline  
post #3 of 5 (permalink) Old 06-01-2011
BOSS Member
5.0L Member
 
ALMOST STK's Avatar
 
Joined: Jan 2010
Location: Prunedale
Posts: 3,980
 
FWIW:..... In the 89 Mustang Shop Manual it show the rear window defroster or the convertible top switch being just below the hazard switch.

Last edited by ALMOST STK; 04-19-2015 at 03:20 PM.
ALMOST STK is offline  
post #4 of 5 (permalink) Old 06-01-2011
MACH I Member
5.0L Member
 
FoxChassis's Avatar
 
Joined: Jul 2003
Location: NOYB
Posts: 2,993
 
Rear window defrost was not available on Fox convertibles.

The plug was still in the main harness and the switch was still in the dash, regardless.
FoxChassis is offline  
post #5 of 5 (permalink) Old 06-02-2011 Thread Starter
Apprentice
 
strykerfive's Avatar
 
Joined: Oct 2008
Location: Kaneohe Bay
Posts: 52
 
pics and TM reference material

Thanks for all your responses. I am pretty sure now that I didn't have a rear window defogger control relay. If I did, it didn't do anything for me nor did it complete the circuit for the Convt Top Switch.

Regarding my Convt top switch; per the 1988 Mitchells TM Wiring Schematics the power for the switch comes directly from Fuse #5. I didn't get the chance to inspect and test voltage at Fuse #5, but will be doing that first thing tomorrow. If that's good I will be testing the conv top circuit breaker and lower/raise relays for continuity and voltage, followed by jumping wires to try and raise/lower the top.

I've attached some pics of the Tm of the Rear Window Defogger Control Relay and Switch for anyone that might want it for future use. Also attached, a pic of the Convt Top wiring schematic. The other two pics are the !@# connector that has been wasting my time and giving me grey hairs.

Semper Fi and thanks for yalls help.

John
Attached Thumbnails
Click image for larger version

Name:	photo-1.JPG
Views:	328
Size:	120.8 KB
ID:	131618   Click image for larger version

Name:	photo.JPG
Views:	331
Size:	106.8 KB
ID:	131619   Click image for larger version

Name:	photo-2.JPG
Views:	272
Size:	118.1 KB
ID:	131620   Click image for larger version

Name:	photo-3.JPG
Views:	253
Size:	79.0 KB
ID:	131621  
strykerfive is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in









Random Question

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183