can’t find a fuse ’05 f250
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=110409
Printed Date: April 27, 2024 at 7:28 AM
Topic: can’t find a fuse ’05 f250
Posted By: dredmond
Subject: can’t find a fuse ’05 f250
Date Posted: January 06, 2009 at 3:35 PM
Installing an alarm/ remote start on my '05 F250 PSD. As I was soldering my last 12v supply wire to the yellow wire at ignition harness, I accidentally sparked it (yeah, I should have disconnected the battery but forgot - last minute add on). Anyway, the yellow wire is now only hot when the ignition is on. I thought it was no big deal, but now cannot find a fuse feeding it. Any experts out there that know where it is fed from, fusable link, etc. I checked all the fuses under the dash and hood and all good. I could change the feed to the GREEN/ purple but really need to find where I blew a fuse...
Replies:
Posted By: loneranger
Date Posted: January 06, 2009 at 3:47 PM
It's a fusible link, I believe. It needs to be fixed ASAP. Otherwise, you'll blow the fusible link for the GREEN/ purple as well.
Posted By: loneranger
Date Posted: January 06, 2009 at 3:54 PM
Posted By: dredmond
Date Posted: January 06, 2009 at 4:08 PM
Nothing... Checked all the fusable links in the fuse box, and can'd find anything around the battery or alt.
Posted By: loneranger
Date Posted: January 06, 2009 at 4:19 PM
I next advice would be to find a service manual or contact the dealer. The reason your seeing 12v+ on the yellow, is because the GREEN/ purple is back-feeding it through the ignition switch. Ultimately, the fuse for the GREEN/ purple will blow from feeding circuits it wasn't built for.
Posted By: robertsc
Date Posted: January 06, 2009 at 4:58 PM
i would suspect a fuse under the hood
Posted By: hydrodancer91
Date Posted: January 06, 2009 at 5:26 PM
its not a fuse in the fusebox there is a fusable link that runs off of the battery on most vehicles. it will either be right by the battery or possibly by the starter or starter solenoid. it will look like a inline fuse.
Posted By: chev104275
Date Posted: January 06, 2009 at 6:46 PM
I see 2 yellows pin 7 and pin 12 at the ING switch according to my diagram there both fed from the (CJB) Central Junction Box Fuse number F2.110 30 Amp (usually green) Central Junction box is the fuse box under the drivers side of the dash other than that you may have fried somthing in side the CJB
Hope this helps good luck
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If i Can't Install it I Don't need it Joe
Posted By: dredmond
Date Posted: January 06, 2009 at 6:56 PM
Thanks Joe, Fuse 110 is not blown. Does that feed from a main bus inside the CJB or is there a fuse further upstream toward the battery that may have blown? Can you tell me where the GREEN/ purple is fed from, the other 12v supply to IGN?
Posted By: ckeeler
Date Posted: January 06, 2009 at 7:33 PM
hydrodancer91 wrote:
its not a fuse in the fusebox there is a fusable link that runs off of the battery on most vehicles. it will either be right by the battery or possibly by the starter or starter solenoid. it will look like a inline fuse.
auto makers havent used those things for years. anything newer wont have the type of fusible you are talking about, which incidently is a real fusable link, the other fuses that the poster above posted a link to are not "fusable links", they are called "JCAS" fuses are are nothing more than fuses that are shaped differently than your standard ATC fuse.
Posted By: dredmond
Date Posted: January 06, 2009 at 7:39 PM
I thought fusable links were long gone also... My son's alternator quit working on his '04 GMC Canyon, bad batteries, amps, subs, etc. After replacing it, and further troubleshooting, we found the in-line fusable link blown in the wiring harness beside the battery.
Posted By: ckeeler
Date Posted: January 06, 2009 at 7:59 PM
wow, im amazed. for one, why any auto maker would still use that crap is beyond me. no wonder they ( the "big" 3) are destined for failure. you wont see stupid stuff like that on Asian cars. ((thank god) that is if there is one  )
Posted By: dredmond
Date Posted: January 06, 2009 at 8:07 PM
I don't understnad why they would use one either... And yes, there is one...
Posted By: hydrodancer91
Date Posted: January 06, 2009 at 8:35 PM
i had a customer with a 06 econoline van that tried to put his own alarm on and blew his fusable link i never looked at his van but after we talked about it i got him together with a local ford dealer i have a good relationship with and they trouble shot it over the phone and ended up being the fusable link come to think about it im pretty sure it was near the starter. but dont hold me to that.
Posted By: 97gss
Date Posted: January 06, 2009 at 9:55 PM
[QUOTE=loneranger]Look for one of these under the hood, near the battery or altenator: https://parts.leftlanenews.com/auto-parts/ford/engine-electrical-fusible-link[/QUOTE] I'm going to agree with this one. I've done the same thing before on an Explorer. Tapped my soldering pen to that metal bar that you can't remove from under the steering column. You can get the fuse from Autozone. I would meter it if I were you also. If I remember correctly, I believe it was pink in color.
Posted By: chriswallace187
Date Posted: January 07, 2009 at 12:40 AM
IIRC GM trucks still use a big stupid fusible link for the battery-to-alternator connection. However it's at least accessable now, unlike the stupid older style links which blew at the starter, in the least accessible part of the engine compartment.
It was pretty amazing how long it took them to figure out that they could mount their relays and fuses in just one location.
Anyway as far as the F250 in question here, I'm going to go with it probably being one of the maxi fuses/fusible links under the hood. Either that or the ign. switch sustained internal damage.
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C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
Posted By: dredmond
Date Posted: January 07, 2009 at 6:53 AM
I had the ignition switch plug disconnected when I sparked it so the IGN switch should not be involved. Apparently, there are two fusable links near the battery positive terminal feeding the Central Junction Box, which feeds the two switch wires. Somewhere in that loop I have an open circuit. TBD...
Posted By: chev104275
Date Posted: January 07, 2009 at 2:06 PM
ok if the fuse is good is there power there at the fuse ? all my diagram shows is a bus bar mounted inside the CJB that has 12 volts at all times feeding fuses F2.110 (yellow wires) F2.116 (Dark Blue/Orange wire) and F2.103 Light GREEN/ Violet all get power from the same source The CJB
Hope this helps
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If i Can't Install it I Don't need it Joe
Posted By: loneranger
Date Posted: January 07, 2009 at 5:04 PM
I hope it's not a bus bar. Otherwise the whole box will have to be replaced.
Posted By: dredmond
Date Posted: January 07, 2009 at 6:45 PM
Got it guys... Well, you can't always look at the "fusable link" type fuses and absolutely tell if they are blown. After pulling the specific fuse and checking with a meter it was bad, could not tell by appearance. All is well now. Thanks for all the help.
Posted By: 97gss
Date Posted: January 07, 2009 at 7:55 PM
Yep. Been there. Glad you got it straight.
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