924Board.org

[Wareagle32789]

Just brought home a 1980 924. Previous owner stated that the alternator was bad, and was able to confirm that after getting the car running on a fresh battery (voltage across battery when engine is running is 11.75). The old battery cable was messed up, so I decided to swap it out during the alternator exchange.

Got everything back together, and when I hooked up the positive cable on the battery, I was surprised when the engine began turning over. I connected the battery cable to the same post on the starter as the previous.

What did I do? Also, there were 3 red leads connected by ring terminals to the positive battery cable by the PO, which feed to a cable sticking through the fire wall. What do these run, and how is the best way to connect these?

Thanks

[Johnny_Haywire]

Not sure what you did wrong on the wiring to the starter, but those three red leads with ring terminals are stock and need to be connected to the positive terminal (I think they feed the fuse/relay boxes, but can't remember at the moment).

Congrats on the new 924!
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1981 924 N/A 5-speed

[Wareagle32789]

Thanks for the reply - I'm guessing that the end of the new cable is causing a jump across the starter. The old cable had a "right angle" bend on the terminal, and the terminal on the new cable is flat and much longer, so I suspect that it needs to be taken off and bent to avoid the condition I have now.

There isn't a way to connect the 3 red wires to the new positive cable, short of inserting ring terminals through the tightening bolt on the battery cable terminal clamp. Do you have any better suggestions for this?

[Johnny_Haywire]

I had to do exactly that - I fastened the 3 red leads to one of the clamp bolts for the cable. The eyelets were too small to fit on the new terminal clamp's larger bolts.

Hopefully making that bend is the fix. Let us know how it goes.
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1981 924 N/A 5-speed

[fiat22turbo]

Yes, the distance between the connections on the starter solenoid are awfully close. Probably not a bad idea to add some insulation in there to reduce the chance for short circuits.

Yes, adding the three ring terminals to one of the battery bolts is one way to do it.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

[daniel]

Could just be a stuck starter solenoid
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Over the top of skyline, total brake failure.... hit the wall at over 200 kp/h at the dipper, so anyone who has to brake for the esses is a pussy.
1977.5 Race Car, CAMS Group S Spec
1989 944 Cabriolet

[RobertN]

Had a major problem when I got my 924 with starter motor wires fried!! See my post! " starter motor wires fried"
If she turns over when you connect up the heavy battery wire you are definitely crossing the ignition red/black wire on solenoid with the heavy battery wire, that's how it works.
I had to bend the lug at right angles away from the other stud before tightening it of course!
Make sure all wires are away from engine and dressed and tied up fire wall as they can melt if not covered properly with heat sleeving, also cables to alternator are dangerously close to engine, ensure they are well protected by heat sleeving.
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Robert.
Porsche 924 N/A 1984.
Electrical Engineering Sales to Control panel builders.

[Wareagle32789]

OK, removed cable, bent at a right angle and trimmed it down.

Hooked it up, and the car started!

Thanks to all who responded.

[RobertN]

Nice one. Enjoy!
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Robert.
Porsche 924 N/A 1984.
Electrical Engineering Sales to Control panel builders.