It's dead, looking for some diagnosing help

[BlackVic_P71]

since I've had the wagon, it had a good month then things started happening. I had a few dead batteries that I thought were linked to the hissing coming from the back, still haven't figured out exactly what is going on but I thought the dead battery was solved with a newer battery until this morning.
I went to start the car and had nothing.
I am not just disconnecting the battery when leaving it until I get this figured out, I know that's not the answer so I have to figure what is draining the battery overnight.
On newer cars there is a fuse for everything and a few fuse panels but I only see the one under the drivers panel in this car and it seems to just be lighting.

When I just replaced the battery, I noticed a cluster of "Fusible links" just behind the starter solenoid and one is toasted.


How do you replace these and why did this melt/burn away?

I am going to look through the book but it's a big book and it may take me a while so if someone here could just point me in the right direction that would be greatly appreciated.
Thanks,
Tom

[nfldfordltd]

Check your fuel pump relay to see if it's staying energized after the key is turned off. As for the fusible link, I just cut the wires on each side and bridge the gap by connecting a new fusible link in it's place. I'd try changing the toasted link before rooting around at other stuff, easiest/cheapest stuff first. Hope this helps!

[t65neon5]

also check the square plug on your alternator and see if it is melty looking(or hook up your battery and see if that area gets "warm") , this happened to my 90 crown vic and would drain a battery overnight also.......

[GM_Guy]

On an '89, Yellow wire with a 16 guage link (more than 1 joining a yellow wire) goes to the rear window defroster.

The other one goes to the trailer tow package (relays in the trunk), specically the one for the right turn relay.

If you don't have trailer tow, that'll be an easy one to figure out. In either case, just disconnect the link and tie it back so it doesn't flop around. Either is only used for the one function.

Alex.

[BlackVic_P71]

Check your fuel pump relay to see if it's staying energized after the key is turned off.

I'll look into that tomorrow

On an '89, Yellow wire with a 16 guage link (more than 1 joining a yellow wire) goes to the rear window defroster.

The other one goes to the trailer tow package (relays in the trunk), specically the one for the right turn relay.
Alex.

It does have the tow package so I'll see which one is fried.

[gadget73]

If it does happen to have auto-level, make sure that the compressor is not constantly running too. I don't know what color wire that uses, but on mine the relay welded "on" after the system was disconnected and eventually it melted the fuse link.

[BlackVic_P71]

The defrost worked this morning so it must be the trailer wiring which I haven't even tried to use. I don't think it has auto leveling but not certain, I haven't heard a compressor like in the Sport with air springs.



Sent from the crapper

[GM_Guy]

Did you disconnect the burned link yet? If not, go do that, and give the systems a go/no go check, including the rear defroster.

Alex.

[BlackVic_P71]

The burned link is gone, it had split in 2 and just some of the rubber coating is holding it together.

[mobydick]

The defrost worked this morning so it must be the trailer wiring which I haven't even tried to use. I don't think it has auto leveling but not certain, I haven't heard a compressor like in the Sport with air springs.

If you have a factory tow package wagon I'm pretty sure it has auto leveling. It's air shocks not air springs, and there is a small compressor under the hood on the drivers side behind the washer/coolant tanks.