|
|
|
Your donations help keep this valuable resource free and growing. Thank you.
|
69 AMX ignition switch |
Post Reply 
|
Page 12> |
| Author | |
Javelin360 
AMC Nut 
Joined: May/23/2011 Location: Nevada Status: Offline Points: 304 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: 69 AMX ignition switchPosted: Sep/02/2019 at 3:35pm |
|
When I did the interior of my AMX I bought a reproduction wiring harness and installed it. Today the stereo started losing power and I noticed the wires coming out of the ignition switch were very hot. It is the original switch. Could the switch be causing this?
|
|
|
69 AMX 401/727
74 Javelin 360/727 09 Mustang Supercharged 4.6 14 Wrangler Sport 4X4 18 GMC Sierra |
|
 |
|
|
turbo
AMC Addicted
Joined: Oct/26/2008 Location: chicago area Status: Offline Points: 2568 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/02/2019 at 3:52pm |
|
No....Not likely the switch. Do you have a power amp? Think high draw items.
|
|
|
they call me Capt RETIRED!
|
|
|
|
|
Javelin360
AMC Nut
Joined: May/23/2011 Location: Nevada Status: Offline Points: 304 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/02/2019 at 4:21pm |
|
I have an amp for the stereo but it is wired from the battery not through the fuse panel.
I went through the ignition switch test in the 69 TSM and the switch Edited by Javelin360 - Sep/02/2019 at 4:32pm |
|
|
69 AMX 401/727
74 Javelin 360/727 09 Mustang Supercharged 4.6 14 Wrangler Sport 4X4 18 GMC Sierra |
|
|
|
|
Javelin360
AMC Nut
Joined: May/23/2011 Location: Nevada Status: Offline Points: 304 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/02/2019 at 4:53pm |
|
Turning the key to the IGN position with everything off the wires still get warm. I'm not sure where to look next.
|
|
|
69 AMX 401/727
74 Javelin 360/727 09 Mustang Supercharged 4.6 14 Wrangler Sport 4X4 18 GMC Sierra |
|
|
|
|
turbo
AMC Addicted
Joined: Oct/26/2008 Location: chicago area Status: Offline Points: 2568 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/02/2019 at 4:56pm |
|
I don't know man.....like trying to diagnose a person over the phone....
|
|
|
they call me Capt RETIRED!
|
|
|
|
|
Javelin360
AMC Nut
Joined: May/23/2011 Location: Nevada Status: Offline Points: 304 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/02/2019 at 5:26pm |
|
I'm gonna start by disconnecting the amp and see what happens. I'll continue pulling fuses until I figure it out I guess.
|
|
|
69 AMX 401/727
74 Javelin 360/727 09 Mustang Supercharged 4.6 14 Wrangler Sport 4X4 18 GMC Sierra |
|
|
|
|
Perrybones
AMC Nut
Joined: Oct/05/2008 Location: Freehold NJ Status: Offline Points: 274 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/02/2019 at 6:33pm |
|
Which wire is the hottest? If its the red, thats the main power from the battery. It has no fuse. Green should be the starter solenoid "crank" wire. Pink should be the ignition coil wire. I would suspect the coil wire
|
|
|
Perry 70 Javelin SST 390, 69 AMX 343, 73 AMX 360, 67 Rebel SST Conv and 92 Corvette Conv. (modern muscle to keep wife happy).
|
|
|
|
|
george w
Supporter of TheAMCForum 
Joined: Jan/27/2013 Location: New Jersey Status: Offline Points: 2899 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/03/2019 at 5:34am |
|
Make sure that the male terminal blades on the switch are clean and bright and do your best to clean the mating female terminals in the plug. You may have to remove the terminals from the plug one at a time and then clean them with a brass wire brush. You may also want to squeeze them down a bit to insure that they connect tightly to the switch terminals. Make sure that the battery is disconnected when you do this. If you're still getting heat then the internal contacts in the switch may be dirty or going bad creating resistance. It's resistance that creates the heat. I'm not sure if the ignition switch can be taken apart to inspect or clean the contacts.
|
|
|
Long time AMC fan. Ambassador 343, AMX 390, Hornet 360, Spirit 304 and Javelin 390. All but javelin bought new.
|
|
|
|
|
bigbad69
Supporter of TheAMCForum
Joined: Jul/02/2007 Location: Ottawa, Ont. Status: Offline Points: 6685 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/03/2019 at 8:35am |
|
Hot wires means excessive current. You have a short somewhere. To narrow down where it is, start pulling fuses one by one until the wires stop heating. Make sure to test after each fuse is pulled so you know which fuse did it. If you have access to an ammeter, connect it between the battery and positive battery cable. Look for a dramatic drop in current as you pull fuses. That's a little more scientific than feeling for hot wires. What george w said about cleaning the terminals was good advice. I'm not sure dirty terminals would cause the wires to get hot, but could cause the connector at the switch to get hot.
|
|
|
69 Javelin SST BBO 390 T10
|
|
|
|
|
JGRANTAMX
AMC Addicted
Joined: Jun/02/2017 Location: Maine Status: Offline Points: 1703 |
Post Options
Thanks(0)
Quote Reply
Posted: Sep/03/2019 at 2:24pm |
|
I would pull all the fuses and disconnect anything that draws power when the key is on, then put them back on one at a time until the problem circuit is found this way you are less likely to damage something while checking for the issue.
J
|
|
|
|
|
Post Reply
|
Page 12> |
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Click for TheAMCForum Rules
Topic Options