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Joes924Racer · Posted: Sat Apr 12, 2003 4:01 am Post subject: Need help porsche people.

I need some help A couple wires got hot by my hands moven them around and kind of melted a couple of black ones and brown ones
..Electrics to guages arent working right, volt guage doesnt work at all, oil guage kind of, tach only revs to 2500 then kicks it self to zero then stays around 2 grand,fuel guage reads wrong lower than it should.Ill be fiddling with it a few days till sunday

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1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

John Brown · Joined: 07 Nov 2002 Posts: 903 Location: Leesburg VA

I don't know that any of us can help you. Sounds like the 12 volt supply was shorted. You just need a wiring diagram and lots of patience.

Alex Roy · Posted: Sat Apr 12, 2003 5:12 am Post subject:

I'd say spend a couple hours at the junk yard and pull a interior wire harness section and just replace your burned up one.

Joes924Racer · Posted: Sat Apr 12, 2003 7:35 am Post subject:

I released the instrument cluster harness completly from the back of the panel..theres what appears to be a couple of big ground lugs around the panel stuck to the body with a bunch of brown wires runnen to it 'well I 'traced a brown wire fron the main instrument cluster to the little instrument cluster all thru the main instrument cluster it was messed up didnt melt none of the other wires just stuck to them so I seperated it out and will replace. ..Im gonna clean up all the lugs and vaselene them for corrosion protection...

I cant beleive I took it all out from behind the steering collumn and unwrapped it all...now its a rats nest ..hope this works.I think it started from a heater wire left over anyway theres a bunch of wire not needed in there Im taking out..have a nice little pile growen on the ground.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Joes924Racer · Posted: Sat Apr 12, 2003 11:22 am Post subject:

How do I hook up a voltmeter.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

jamez · Joined: 03 Nov 2002 Posts: 401 Location: Chehalis, Wa

I could be wrong, but one side should go to ground and the other should go to a hot lead, probably a red wire.

Joes924Racer · Posted: Sat Apr 12, 2003 2:04 pm Post subject:

yes thats in parallel I think ...
did you know the reason people dont generally
run with amp guages is because of the
thickness of the wire it would take
its kind of scary.

Heres a good link.On voltmeter installation.
http://www.totallytriumph.net/dcforum/DCForumID5/151.shtml

Wonder if I fried my voltmeter.. somehow..find out saterday.
I have diagnostic tune-up anylizer thats
shows voltage & amps.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

Joes924Racer · Posted: Sat Apr 12, 2003 2:16 pm Post subject:

Thats a good triumph link.The spitfire is a good car my dad bought one
for my sis in Denver in 78 ..nice car

The voltage guage hooks up where to where [a switched source in the harness]. Where does it get its power?
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.

RageLtMan · Joined: 05 Mar 2003 Posts: 184 Location: Boston, Ma

i feel your pain man, i've spent countles hours behind my cluster when my speedo was broken. all the crap back there is just plain scary

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1987 924S 2.5L SOHC.

Joes924Racer · Posted: Sun Apr 13, 2003 3:57 pm Post subject:

Well went to a b-que ,tri tip,bakers,,chicken,saled
after I worked all day on it .Used the volt meter
from the anylizer and tested different loads ,
switched and unswitched then got the tach to work
and the guage on the far left to settle down
then the tach and then I decided to take the harness
out clean out and organize it wrappinit in places..
then the fuel pump decides to not work
so I loosen it up in the back removin those
rubber seals theres good voltage so I put down
the nuts and it turn out one lug is stripped where
its supposed to get snug so I fix that..secure
a switched load (heater) for the mini cluster
oil guage then use the ignition for volts
all wires the same guage as was intended...
no the tach wont work ...its all apart in the
driveway being cooperative till
morning....there a few bugs left....I think the
alternators are both good..This all started cause
I moved around some wires sticken my hand
in to tighten down the speedo after I moved it to
the far right its goin back in center where it easier to see.
Man are we haven fun!!

_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo.