midengine

ok. ive heard about the electrical gremlins of 928s. but now its happenening and i dont know what to do. first the rear wiper started being intermittent not it stopped, then just last night the inner driving fog lights (brights) quit working all together. i can handle the rear wiper for now. but i cant stand the bug eyes unless i really need them. i want my bright fog lamps back for in town night / early morning driving. guidence?

the flyin' scotsman

what is the year and model of your car?

midengine

right sorry, Its A 86.5 S thanks in advance!

Shane

Check fuses #30 and #33
And Relay #13 or XIII

the flyin' scotsman

here's the fuse/relay chart if you don't have one:

danglerb

Wouldn't this maybe be a good time to just PM the whole fuse panel?

midengine

thanks guys, the diagrams helped a lot to find the fuses. i checked both 30 and 33 neither fuse is blown. what else should i try? how would i test the xiii relay?

Bill Ball

Malcom - you seem to be using the PrtScn key a lot the last few days.

Shane

Swap XIII with XII (horn Relay) and test horn, if horn works relay is fine, then check bulbs and wiring, grounds etc.

the flyin' scotsman

Its like having a new toy but it takes some trial and error to get it right. In this attempt only the top part of the fuse/relay diag. was captured and its fuzzy because of the reduction to get it to fit.

midengine

Thanks for the replys guys. shane thanks for the idea to swap relays, i will try tthat next.

Lizard928

Malcom, if you hold Alt when you press PrtScn then it only puts the selected window into the clipboard, so in other words you dont take your taskbar with you.

WyattsRide

Holy thread revival Batman!!

Both Fogs aren't working. The fuse #30 is good (checked it with the fuse checker relay. (VIII I believe)

Is the above statement true? The Horn relay (XII) on my 85 is different than the Fog Light relay (XIII). Can I really do this, to check if the Fog relay is good or not? How else can I check the relay? Can I check it with a Multimeter? If so, how?

The bulbs "look" good but, I'm not sure on how to check them with a 12v battery.

Thanks for any help

WallyP

First, use a test light or voltmeter/multimeter to check for power on both sides of Fuse #30 with the headlamps on low beam, ignition switch on, and fog lamp switch on. You can test by touching the tiny metal bits on the face of the fuse, although that won't test the contact between the output side of the fuse and the socket.

If there is power here, the problem is likely to be:
- Bad connection on the output side of the fuse.
- Both bulb are bad.
- Plug O is not seated completely. Plugs are alpha, left to right, with no I plug.
- Bad connection behind the Central Electric panel.

If there is no power on Fuse #30, remove Relay XIII. Look at the diagram on the relay, and identify Terminal 30 in the relay socket. With the headlamps on low beam and the ignition switch on, check for 12 vdc on Terminal 30. If there is no power on Terminal 30, swap Relay IV (the Bus X relay) and Relay XII (the horn relay). Check for power on Terminal 30 again. If there is now power, install a new Relay IV.

WyattsRide

Thanks Walley for the fast response. I will go through these instructions tonight and get back on what I found.