924Board.org

WhoDak · Joined: 22 Mar 2005 Posts: 492 Location: Akron, OH

Well on my new 924 I noticed the brake lights do not work. Both signals work, both reverse lamps work, and my drivers side tail light works. I've checked/changed the brake bulbs, I've checked/cleaned up the connections and the rear ground and I've got nothing. Trying to pass a spark from the positive to the light chassis plate got nothing either. Is there something that I'm missing here? Also my side marker lights on the right side aren't working. I changed the front bulb, it worked, changed the rear bulb, it worked, now neither of them work again...this is odd. Any ideas on what else to try?
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Mike
'82 924 N/A
'91 Toyota Pickup SR5 4x4 Xtra cab

Ozzie · Posted: Sun Apr 10, 2005 7:54 am Post subject:

Check fuse 6 on the main board

Also

WhoDak · Joined: 22 Mar 2005 Posts: 492 Location: Akron, OH

Fuse six never blew, even when I did that, I figured since it happened when I accidently did it on the side marker lights that it would do it if anything was working on the brake lights...didn't blow it either, i've replaced that fuse already as well. This is getting to be a bigger problem than "changing out the bulbs and replacing a few fuses".
_________________
Mike
'82 924 N/A
'91 Toyota Pickup SR5 4x4 Xtra cab

Ozzie · Posted: Sun Apr 10, 2005 2:16 pm Post subject:

I know this sounds weird but you have someone watching the lights or operating the pedal, correct?
As you don't know how to operate a multimeter I can't help.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

Neil924 · Joined: 18 Mar 2003 Posts: 4225 Location: Canada

WhoDak · Joined: 22 Mar 2005 Posts: 492 Location: Akron, OH

Ozzie · Posted: Sun Apr 10, 2005 3:23 pm Post subject:

Pull fuse 6.
Check the lampholder for the lights has a good earth.(0 ohms to body)
Check that the wiring is good from the brake switch to the +ve terminal at the brake light. (0 ohms one end to other)
Check the switch/es operate when pedal is depressed. (0 ohms across switch)
Refit fuse 6
Check that you have 12 volts at the brake switch/es.(12 volt dc - one terminal to body.)

If that is all there they should work.
_________________
Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance

timstar92404 · Joined: 22 Sep 2004 Posts: 2075 Location: richmond BC

i had the same problem and I freaked out and looked for bad connections but it was just a blown fuse.
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78 924 sold.
85.5 944

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

I had the same problem and changed the switch. My son with big feet bent the switch. Under dash near steering column. cheap fix.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

I had the same problem and changed the switch. My son with big feet bent the switch. Under dash near steering column. cheap fix.
_________________
"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

WhoDak · Joined: 22 Mar 2005 Posts: 492 Location: Akron, OH

Ah I see Vince, perhaps that's why they don't work now, I'm sure the previous owner didn't drive around with no brake lamps for 4 years. I'll check that switch out and test some voltages today. Thanks guys.
_________________
Mike
'82 924 N/A
'91 Toyota Pickup SR5 4x4 Xtra cab

WhoDak · Joined: 22 Mar 2005 Posts: 492 Location: Akron, OH

Well, this

might be part of my problem. I'm guessing these wires aren't suppoused to be cut and hanging there? I tested the ground, wiring from the pole thats connected, and the switch itself and they all checked out good. Any idea on what goes to what, or why in god's name someone did this?
_________________
Mike
'82 924 N/A
'91 Toyota Pickup SR5 4x4 Xtra cab

WhoDak · Joined: 22 Mar 2005 Posts: 492 Location: Akron, OH

Any ideas? Pictures to compare to? I'm about to give up and take it to an auto electrician so he can be pissed at it.
_________________
Mike
'82 924 N/A
'91 Toyota Pickup SR5 4x4 Xtra cab

WhoDak · Joined: 22 Mar 2005 Posts: 492 Location: Akron, OH

OK, so after a bit more searching around, I found some older threads that told about this problem. But none of them had a problem with the wiring itself, my switch is just fine. I have no clue how to rewire this mess to functioning. I've already tried bridging the loose wire from the switch to that one you can see just a bit of in the back of the picture with no luck. I found my emergency brake wire wasn't connected, so I snapped that back on hoping it would do the trick like it did for someone in an older thread with no luck, I didn't expect any since I've got dangling wires. Any suggestions? Has someone else dealt with this on a rewire, or has anyone got a good picture of where these wires need to go?
_________________
Mike
'82 924 N/A
'91 Toyota Pickup SR5 4x4 Xtra cab

Khal · Posted: Mon Apr 11, 2005 12:48 pm Post subject:

Grounds are apparently forever a problem with these cars.