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TINMAN · Joined: 19 Aug 2007 Posts: 78 Location: Baltimore Md

well i took my 1980 Porsche to the MD inspection a couple of weeks ago and have been busy since trying to get things fixed like ball joints, wheel cylinders, Master Cylinders, and more. but there were a few items which stumped me.

For one, the HandBrake, when actuated doesnt do its job. so i tightened it, and that didnt work. whats up with that. maybe the cable got stretched? and the handbrake warning light wont come on either

Also, the headlights dont work properly. when they are in highbeam they are fine, but when switched to the lowbeams, the right one wont shine. do i need to replace the fuse? or that box like part on the fuse panel?

Then, when you brake, on any car, the braking lights come on. well i need to adjust at what point on the car these lights come on because they come on too late or when you get on the brake pedal pretty hard

The inspection guy said something about the car not having a battery holddown, which it doesnt. did those even come with the cars?

The backup lights wont come on, maybe thats because they need to be replaced. but just in case....

If anyone can give me some help on these issues, it would certainly have my car on the road in no time. thanks
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The TINMAN and his TINCAN

"...When she asks... and i know she will...make sure you let her know whos Porsche it is in the driveway..."

80' 924 Burgundy

Benino · Posted: Tue Oct 16, 2007 6:10 am Post subject:

Have you adjusted the break shoes on the rear? there are holes to adjust the front and rear shoe on each side by spinning some star nuts with a screwdriver. I'd try this for the brake problem.

For the headlight I'm pretty sure you need a new headlight on that one. You can get them at kragen or whatever local auto parts store you have.

for the brake lights problem, have you bled the brakes? The break lights switch is on the master cylinder on 1980 cars (unless there has been som modification). If the brakes are properly bled, you might need to replace the brake lights switch on the master cylinder.

The cars did come with a battery hold down. Its just a metal piece bent at a right angle with a hole for the stud that sticks up in front of the battery in the battery tray.

the reverse lights switch is on the right side of the transmission near the top. Check to make sure the wiring is connected. if you have a multimeter you might want to check that the switch itself is working. You can also use it to check for +12v at the light bulb itself if you are unsure if the bulbs are good.
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1980 Porsche 924 N/A USA
1980 Porsche 924 turbo USA
1987 Porsche 944S USA

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

TINMAN · Joined: 19 Aug 2007 Posts: 78 Location: Baltimore Md

thanks for the help, i found the holddown which was really hard to see at first.

as for the backup light switch, i still cant find it. heres a few pics of the Transmission column:

those two switches arent connected to anything obviously but thats the only thing i can think of.
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The TINMAN and his TINCAN

"...When she asks... and i know she will...make sure you let her know whos Porsche it is in the driveway..."

80' 924 Burgundy

!tom · Posted: Tue Oct 16, 2007 8:27 am Post subject:

The transmission is under your fuel tank in the back of your car.

You're looking in the wrong area.
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78 924 NA
5-lug

TINMAN · Joined: 19 Aug 2007 Posts: 78 Location: Baltimore Md

... i was hoping that he was mentioning the obvious and it would be in the cab, but i guess not. btw, what are the switches pictured for
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The TINMAN and his TINCAN

"...When she asks... and i know she will...make sure you let her know whos Porsche it is in the driveway..."

80' 924 Burgundy

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

TINMAN · Joined: 19 Aug 2007 Posts: 78 Location: Baltimore Md

yeah but the mirror switch is inside the door panel about six inches from the mirror itself. and the driving lights switch is next to the steering column. but now that you mention it the switch does look like mirrors from this angle. of course you would be looking down (from the top) if you were in the drivers seat.

and yes i did bleed the brakes just a few days ago. i was going to try them out tonight but it seems like the battery is dead so...

now on the transmission, this switch would be on my right side if i was standing up looking at the back of the car, or the left?

thanks for the video neil it was helpful
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The TINMAN and his TINCAN

"...When she asks... and i know she will...make sure you let her know whos Porsche it is in the driveway..."

80' 924 Burgundy

968rz · Joined: 21 Aug 2006 Posts: 537 Location: S. E. Wisconsin

Hey Timman,

That is a mirror switch (from left to right) used together with the switch on the door for adjusting both (electric mirrors ony).
Not sure about the other one,my guess would be fog/driving light.

The warning light switch for the parking brake is at the handle, the contact brakes/unpluged when cleaning between the seat and handle.
Adjust rear breaks until you feel them drag "a bit" then adjust the parking cable.

Not sure about the brake lights not coming on, adjusting everything else may fix this or the switch could be worn needing replacment. Also the pedle may need adjusting (under the dash) careful here; done wrong and the front brakes will drap big time.

Reverse lights, check for continuity at the switch while moving the shifter through the gears (all of them); could be bad switch (no continuity ever) or linkage out of adjustment (continuity at times; like half way into revers)

Replace the head light (check the plug for gunk too)

Hope this helps.
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Rick
79 924 coupe Petrol Blue 3spd auto (wife's DD)
93 968 coupe Amazon Green 4spd Tip (my DD)

Mike924 · Joined: 12 Aug 2004 Posts: 2601 Location: IoW UK

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

TINMAN · Joined: 19 Aug 2007 Posts: 78 Location: Baltimore Md

Ok sorry its been so long since ive posted, ive been pretty busy with work.

As for the switches we were talking about earlier, forget them. theyre not even hooked up anyway so they dont matter. First off, the brake lights not coming on until you push the brake pedal waay down is more than likely a problem with the brake pressure sensor located under the master cylinder. Got 2 on order right now. as for the reverse lights, im still trying to find out where the reverse light switch sensor is. you guys mentioned it was somewhere on the transmission but i need something more specific. a picture or two would be amazing. another thing is that i need to get parking brake cables because they have been stretched and are useless. but i saw something about long cables and short ones and im not sure if i need both or just one. the problem with the one headlight not working on low beam, im going to switch the headlights and see if that does the trick. but other than that i also got new drums and rotors on order too so they should be getting here in a week or so. any help you guys can give is appreciated
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The TINMAN and his TINCAN

"...When she asks... and i know she will...make sure you let her know whos Porsche it is in the driveway..."

80' 924 Burgundy

Smoothie · Posted: Sat Nov 10, 2007 10:33 am Post subject:

The Audi manual transmission should have the reverse switch on its' right side. Just look for a couple of wires either connected or hanging there. If not, you should at least find the switch where the wires should connect on the right - and somewhere higher up than the axel halfshaft as I vaguely recall.

Swapping headlights is more work than needs to be done. You can use the ohms function of a multimeter to test the filaments with the headlights in place - just unplug the connector from the rear for access to the bulbs' 3 elect. posts.
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

Lizard · Posted: Sat Nov 10, 2007 10:47 am Post subject:

there is one 2 wires going onto the tranny and these go to the backup light, if you feel around the top of the tranny you should be able to find it.
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3 928s,

RC · Joined: 25 Mar 2007 Posts: 2637 Location: Australia

Yes, the lights are easy to test without much work. Even if you dont have a meter simply give them 12V with a jumper wire from the battery and test hi/lo beam.

Possibly the wire to the light is broken internally due to age and flexing. Simple to check for 12V at the light connector with a meter or test lamp.

Obviously you`ve checked the fuse and have power there, and you have cleaned the connectors on the fuse panel, so if nothing at the light start unwrapping the loom from the light end. Maybe you can feel the break by handling it. If not, remove some insulation with a knife (or cut the wire) about a foot up from the connector and check for 12V again. Do another foot and try again. A simple but tedious rewiring job.

Roger