Gauges and dash lights dont work
 

My dad just bought a 79 Euro model 928. The gauges, and dash lights dont work. When the headlights are turned on, the speedo needle pops up to about 140, and stays there. Im guessing a short, but where? Help is greatly appreciated.

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Ed Fahrenkrug

72 914 1.7
73 914 2.0
68 912
(all under restoration)

Hello

Sorry for the delay but I would focus on the light switch. Right now I still try to find some resources on the net ( wire shematic ).

The 928 electric is easyier to handele then the old 911 add on wirejungle. But some corners are harder to reach.

Simplest would be to remove the instrumentclustercover and check the wireconnections and the connectors from the Instrument.

Grüsse

Thank you for the help. Im going to help my dad fix the problem.

Hello

What help?

It was on my task list for several days but can´t remember to find something suiting to that. I also have a problem to find a direct relationship so it must go around some corners and is maybe caused by something added into the car.

Grüsse

First step is to always check the brown ground wires. Then take a look at the two ribbon connectors that bring all power to the gauges etc. I would then look at the rheostat for the gauge panel lights under dash just above your right knee. These are not very hardy switches.
Keep us posted
78 928 silver 5 speed
74 914 2.0

Fixed it. There was a wire disconnected behind the guage cluster.

I really appreciated everyones help.