Automotive Forums .com - the leading automotive community online! Visit IgorSushko.com and see what it's like racing in Japan
-
Google  
Web AF
See Latest Posts
Access AF from your phone - point your mobile browser to http://m.automotiveforums.com
Go Back   Automotive Forums .com Car Chat > MG > MGB
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 04-14-2008, 11:44 PM   #1
Mark1904
AF Newbie
 
Join Date: Apr 2008
Location: San Diego, California
Posts: 1
Mark1904 Normal reputation
New Owner 79 MGB

Recently I purhased a very nice 79 MGB but there are some minor wiring problems, no brake lights no turn signals and the tach quit working. The temp gauge also quit working and the wiring seems to be intact and in good condition from a visual inspection. Please let me know any ideas of where I might start to find this problem and where can I find a Hazard Warning Switch that is located on the dash. The tach worked the day I bought it but it seemed as though it was acting like it wasn't getting a good connect and then all of the sudden the temp gauge and fuel gauge quit working . Are these tied into a main junction somewhere, if someone can point me in the right direction I sure need it at point and time
Mark1904 is offline   Reply With Quote
Old 04-20-2008, 02:00 PM   #2
KimMG
AF - Advisor
 
Join Date: Aug 2004
Location: Pinole, California
Posts: 2,276
KimMG Normal reputation
Re: New Owner 79 MGB

http://www.advanceautowire.com click on stock schematics
You will also need a test light or meter.

Common problem would be the third fuse. Use a meter or test light to check for continuity between the terminals for the white/brown wires and the green wires on the fuse box.
KimMG is offline   Reply With Quote
Old 06-09-2008, 08:14 AM   #3
paul J
AF Newbie
 
paul J's Avatar
 
Join Date: Feb 2008
Location: Loris, South Carolina
Posts: 61
paul J Normal reputation
Re: New Owner 79 MGB

Quote:
Originally Posted by Mark1904
Recently I purhased a very nice 79 MGB but there are some minor wiring problems, no brake lights no turn signals and the tach quit working. The temp gauge also quit working and the wiring seems to be intact and in good condition from a visual inspection. Please let me know any ideas of where I might start to find this problem and where can I find a Hazard Warning Switch that is located on the dash. The tach worked the day I bought it but it seemed as though it was acting like it wasn't getting a good connect and then all of the sudden the temp gauge and fuel gauge quit working . Are these tied into a main junction somewhere, if someone can point me in the right direction I sure need it at point and time
I have found that starting at the fuse block in the engine compartment, by cleaning all the bullet connectors and respective recepters and applying a slight dab of dielectric grease on them before inserting, (If you can see the grease, it's to much), usually solves a lot of electrical problems. From that point, it's connector after connector in the system. Notice I said, it's a starting point and not nessasary a fix. Welcome to Mr. Lucas's night mare.
paul J is offline   Reply With Quote
Old 07-09-2008, 04:08 PM   #4
mre64
AF Newbie
 
Join Date: May 2008
Location: Virginia Beach, Virginia
Posts: 5
mre64 Normal reputation
Re: New Owner 79 MGB

I own a 79 MGB also. I had similar problems. I replaced the fusebox, very inexpensive, I ordered it through Victoria British. I also replaced the Engine to frame groundstrap. When I took the fusebox off the fender, the back of it was all corroded. If it is 30 years old, I recommend replacing it anyway.

Good Luck
mre64 is offline   Reply With Quote
Old 08-18-2008, 08:12 AM   #5
paul J
AF Newbie
 
paul J's Avatar
 
Join Date: Feb 2008
Location: Loris, South Carolina
Posts: 61
paul J Normal reputation
Re: New Owner 79 MGB

Quote:
Originally Posted by mre64
I own a 79 MGB also. I had similar problems. I replaced the fusebox, very inexpensive, I ordered it through Victoria British. I also replaced the Engine to frame groundstrap. When I took the fusebox off the fender, the back of it was all corroded. If it is 30 years old, I recommend replacing it anyway.

Good Luck
I agree 100%. The ground strap and how well it's connected is overlooked quite a bit. If this is loose or not making a good connection, all kinds of electrical problems can evolve.
paul J is offline   Reply With Quote
Old 08-24-2008, 10:07 AM   #6
paul J
AF Newbie
 
paul J's Avatar
 
Join Date: Feb 2008
Location: Loris, South Carolina
Posts: 61
paul J Normal reputation
Re: New Owner 79 MGB

Quote:
Originally Posted by paul J
I agree 100%. The ground strap and how well it's connected is overlooked quite a bit. If this is loose or not making a good connection, all kinds of electrical problems can evolve.
I sold my 79 yesterday. Was in the barn for five years
Gave the wife the 72 and was going to restore the 79 for me, but I just couldn't get into doing a rubber bumper model. I'll find something else sooner or later.
paul J is offline   Reply With Quote
 
 
 
 
Reply

POST REPLY TO THIS THREAD


Bookmarks
Go Back   Automotive Forums .com Car Chat > MG > MGB

« Previous Thread | Next Thread »
Thread Tools

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:06 AM.

Google  
Web AF
Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
no new posts