Electrical problems Options

[watsonrx13]

I've been trying to track down an electrical problem with my FI and I've found more problems.

1. When I turn on the ignition switch I blow fuse #9. The Haynes manual says that this fuse powers the turn signals, brake lights and back-up lights. Also, I noticed that the buzzer sounds when I turn on the key, regardless of both doors closed or open. Anyway, I disconnected the brake light switch at the brake pedal, all of the wires to the turn signals and disconnected the back-up light wire at the tranny but the fuse still blows, which then stops the buzzer.

2. No power to the coil. I've replaced the ignition switch with another one, but I'm still not getting any power at the coil. I've checked the continuity between the ignition switch and the coil.

I have power to all pin #30s on the relay board in the engine compartment. I have power at the large red wire at the ignition switch.

I feel that I'm very close to getting this car running, but with these electrical gremlins I'm extremely frustrated...(IMG:style_emoticons/default/mad.gif)

Any suggestions and/or guidance would be greatly appreciated....

-- Rob

[904svo]

Try this remove fuse #9, using a volt meter or trouble light check
1. Turn on key, one side of the fuse should have 12 volts on it (Black wires on it)
these wires go to the ingition swich and to the relay board which supply power to the coil and other relays. If this is OK check the following

2. Problem must be on the black/yellow wire ( brake switch) or
the red/white wires which power the gauges and the emergency flasher switch
if you disconnect these wires and reattatched them one at a time you can find
out which wire is causing you a problem which you can track down the problem.

hope this helps you

[watsonrx13]

Try this remove fuse #9, using a volt meter or trouble light check
1. Turn on key, one side of the fuse should have 12 volts on it (Black wires on it)
these wires go to the ingition swich and to the relay board which supply power to the coil and other relays. If this is OK check the following

2. Problem must be on the black/yellow wire ( brake switch) or
the red/white wires which power the gauges and the emergency flasher switch
if you disconnect these wires and reattatched them one at a time you can find
out which wire is causing you a problem which you can track down the problem.

hope this helps you

I've have some updated information....

1. I have 12 v on the black wires ....

2. I found where the wires connect to the brake switch and disconnected them. I disconnected the red/white wires from behind the instrument cluster, but only the one that came off of the main wiring harness. I know that the other red/white wires are in series, so I was hoping that I only had to disconnect the first one in the loop. I ran out of time, before the storm set in, but I'm assuming that I just need to reach behind the dash and disconnect the red/white wire to the emergency flasher? Anyway, with only the emergency flasher connected, I installed the #9 fuse and turned on the ignition, it still blew the switch...

I do have a question about the brake switch. There are (2) sets of wires hooked to the switch. One group only has a black/yellow wire. The other group has a white/brown, red/white and a black/yellow wire. Is this correct? It doesn't seem that there should be a black/yellow wire on both sides of the switch....

Thanks again for the assistance....

-- Rob

[904svo]

Try this remove fuse #9, using a volt meter or trouble light check
1. Turn on key, one side of the fuse should have 12 volts on it (Black wires on it)
these wires go to the ingition swich and to the relay board which supply power to the coil and other relays. If this is OK check the following

2. Problem must be on the black/yellow wire ( brake switch) or
the red/white wires which power the gauges and the emergency flasher switch
if you disconnect these wires and reattatched them one at a time you can find
out which wire is causing you a problem which you can track down the problem.

hope this helps you

I've have some updated information....

1. I have 12 v on the black wires ....

2. I found where the wires connect to the brake switch and disconnected them. I disconnected the red/white wires from behind the instrument cluster, but only the one that came off of the main wiring harness. I know that the other red/white wires are in series, so I was hoping that I only had to disconnect the first one in the loop. I ran out of time, before the storm set in, but I'm assuming that I just need to reach behind the dash and disconnect the red/white wire to the emergency flasher? Anyway, with only the emergency flasher connected, I installed the #9 fuse and turned on the ignition, it still blew the switch...

Disconnect the wires from fuse #9 the black/yellow supply power to the brake lights if this wire is disconnected and it still blows the fuse it's not the problem.
I would supect the red/white wire is connected wrong some where. one red/white
wire runs to terminal 15 on the emergency switch, the other red/white wire runs to the gas gauge (3 places) two light bulbs sockets then to #15 , then to the tach (#15). I would supect one of them is connected wrong

I do have a question about the brake switch. There are (2) sets of wires hooked to the switch. One group only has a black/yellow wire. The other group has a white/brown, red/white and a black/yellow wire. Is this correct? It doesn't seem that there should be a black/yellow wire on both sides of the switch....

The black/yellow run to the tail lights (stop lamp) the red/white runs to the connector for the gauges in the console the gray/brown runs to #3 terminal
on the relay plate and comes out on #2 to the back up light switch. Note these
wire are power feeds.

This is correct by my wiring diagram.

Thanks again for the assistance....

-- Rob