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> Ignition switch problem
watsonrx13
post Nov 15 2008, 06:59 PM
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Last week I swapped out the ignition tumbler then started having electrical problems. I decided this weekend I would try to tackle them. BTW, I have a '74 2.0l FI. Here's the situation:

When I turn the ignition switch on, I don't get any power to the fuse panel nor the fuel pump nor the starter. Before swapping the tumbler, everything was working fine, except the headlights wouldn't raise. They would light up, but not pop up.

So, I checked the wiring diagram. Here's my interpretation of the ignition switch.....

30 - power from the battery (red)
X - headlight switch (red)
15 - fuse #9 (black) & seat belt warning light (red)
P - starter
S - seat belt warning w/buzzer(gray/brow)
50 - seat belt warning w/buzzer (yellow)

I pulled the tumbler and checked for power at ignition plug #30 - good - 12v
When I turn the key, I get power to fuse #9 (12v). Also the seat belt warning light comes on (the one in the dash above the vent controls). When I close the doors, the light doesn't lite up. The seat belt buzzer sounds, but stops when the doors are closed.

Looking at the diagram, it appears that there should be power to the red wire at fuse #11. I checked and nothing. I decided to place a wire directly from the battery to the #11 fuse. When I installed this wire, my headlights raised and lit up. The fog lights worked. The windshield wipers worked. The turn signals worked.

Is there suppose to be a direct connection between the battery and the fuse panel? And if so, where is the conection?

I think the ignition switch is bad, but I swapped out (2) others that I have in my stash, but they didn't work either. Joe has suggested that I remove the ignition switch from the tumbler and use a small screwdriver to turn the switch, which I'll perform tomorrow.

Any suggestion? BTW, I don't have internet connection at the shop, so I won't be able to check until tomorrow.

-- Rob
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Posts in this topic
watsonrx13   Ignition switch problem   Nov 15 2008, 06:59 PM
watsonrx13   Also, can someone confirm the location of the red ...   Nov 16 2008, 06:45 AM
So.Cal.914   I can tell you that part of the panel is hot all t...   Nov 16 2008, 07:10 AM
watsonrx13   I can tell you that part of the panel is hot all ...   Nov 16 2008, 08:43 AM
southernmost914   I can tell you that part of the panel is hot all...   Nov 16 2008, 01:29 PM
watsonrx13   Just got back from testing the ignition switch. I ...   Nov 16 2008, 12:31 PM
watsonrx13   I bought a new ignition switch and tested it. It w...   Nov 18 2008, 05:52 AM
Joe Ricard   Relay. and I can't remember where it's at....   Nov 18 2008, 05:55 AM
Spoke   I amended your list of items powered by contacts o...   Nov 18 2008, 09:10 AM
Joe Ricard   This immediately needs to go to the classic thread...   Nov 18 2008, 09:47 AM
watsonrx13   Thanks Spoke for the correction and the testing. ...   Nov 18 2008, 12:16 PM
Spoke   The seat belt relay assembly does something with t...   Nov 18 2008, 01:50 PM
Joe Ricard   Question: What was happening with your car before ...   Nov 18 2008, 03:43 PM
DM71SIX   [quote name='Joe Ricard' date='Nov 18 ...   Nov 18 2008, 04:06 PM
watsonrx13   The seat belt relay assembly does something with ...   Nov 18 2008, 04:54 PM
904svo   On the fuse block fuses 10,11,12 are strap toghter...   Nov 18 2008, 01:55 PM
Doug Leggins   Here's a link to a thread that may help. Igni...   Nov 18 2008, 09:28 PM
DM71SIX   Here's a link to a thread that may help. Ign...   Nov 19 2008, 08:59 AM
watsonrx13   New update..... I can start and run the engine.......   Nov 19 2008, 04:56 PM
904svo   The large red wire on lug #12 goes to the fresh ai...   Nov 19 2008, 07:51 PM
watsonrx13   The large red wire on lug #12 goes to the fresh a...   Nov 21 2008, 05:48 PM
zonedoubt   The large red wire on lug #12 goes to the fresh ...   Nov 22 2008, 06:28 PM
zonedoubt   I had some intermittent starting issues that were ...   Nov 22 2008, 06:31 PM
watsonrx13   Well, I finally found the problem with no power to...   Nov 22 2008, 07:00 PM
Spoke   :headbanger: Are your other connections there ar...   Nov 23 2008, 09:58 AM
watsonrx13   Spoke, I did check all of the connections and they...   Nov 23 2008, 03:30 PM


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