Home Search search Menu menu Not logged in - Login | Register

 Moderated by: Greg Fletcher
New Topic Reply Printer Friendly
Fusable Link or Mega Fuse?  Rate Topic 
 Posted: 08-31-2005 11:09 pm
  PM Quote Reply
1st Post

Joined: 07-06-2005
Location: Eugene, Oregon USA
Posts: 162
Has anyone out there used a fusable link or large-amperage fuse to protect their ignition and/ or alternator/ battery circuits?  After all of the work I've done getting my headlights, etc. to work, it has occurred to me that there are still several places I could have disastrous shorts in my wiring harness that could result in damage or destruction of my JH. 

Also, I've heard that fusable links aren't a good way to protect the car because they still burn in a dramatic fashion that could ignite vapors under the hood.  Any ideas out there?

Back To Top PM Quote Reply  

 Posted: 09-01-2005 12:08 am
  PM Quote Reply
2nd Post
Mark Rosenbaum

Joined: 03-12-2005
Location: Kingman, Arizona USA
Posts: 532
Ford used to use a really short fusible link for general system protection, but I'm under the impression they quit doing that in the late 1970s or early 1980s.  Might have been a cost cutting measure, or maybe they had one fail in an exciting manner and got sued as a result, or perhaps my memory is faulty... don't know.

Personally, I wouldn't worry about trying to protect the alternator with a fuse or equivalent -- the odds are very high that the alternator diodes will burn out long before the wiring melts.  Also, I don't see any need for a fuse in the ignition circuit if you still have the ballast in place.  For the headlights, however, relays and suitable fuses might be a good idea if for no other reason than to protect the various switches, and an inline fuse for the lights at the rear of the car might be desirable too.


Back To Top PM Quote Reply

Current time is 08:33 pm  
> Jensen Healey & Jensen GT Tech > Electrical & Instruments > Fusable Link or Mega Fuse? Top

UltraBB 1.172 Copyright © 2007-2011 Data 1 Systems