On my 82 5 speed, the gauge warning lights for the voltmeter, coolant temp and oil pressure gauge are inop. Fuel gauge light does work as do the gauges.

I know a failed voltmeter light can cause the alternator not to excite at low rpms and I have grounded the #1 pin in the 14 pin connector to see if the light comes on. It does not, so I am assuming the light is burnt out.

Other than being a nuisance, do the coolant and oil pressure warning light being inop cause any ancillary problems?

I guess I could get lucky and cleaning all connections in the pod will fix the problem.

Other than a failed bulb, is there any other reason these warning lights aren't working?

I plan on dropping the pod when it cools down outside to address the voltmeter inaccurate readings and alternator excitation problem. But I understand these warning bulbs are quite pricey.

Anyone know the part numbers for these warning light bulb assemblies? Thanks.

 

It sounds to me like the printed circuit board on the back of the cluster might be a mess. Unfortunately, they are NLA as of a couple years ago so this could be interesting to solve.

 

Luckily I have an aircraft electrician expert that can fix about anything with electrons and all the diagnostic equipment that is necessary.

I was thinking the foil board might have some breaks. I have read that guys have fixed theirs with careful solder flowing across the leads.

I guess we test everything once I pull the pod and it gets much cooler in Houston.

Thanks

 

Fantastic, if he can repair printed circuit boards the proper way he might find himself in a new business. When it gets cooler pull the pod and see what you have going on back there, every one of our cars is going to have a problem with them and if we can find a solution, that person will be a huge bonus to the community.

I've tried a few fixed and with solder and thin wire, but it's only a temp fix. We know Porsche Classic will charge $500.00 each if they reproduce it.

 

I am sure he would be interested in a little sideline work.

I will let you know after I pull the pod and completely go through all the circuits how bad of shape mine is in. But since it is only a nuisance right now, it will be a least a month before I pull the pod.

He would have to guesstimate how much his time would be worth, but I will keep you informed.

 

I did a hard wire conversion - replaced the foil with wires and terminal boards and used molex connectors. Has worked great and cost about $30 in materials and a few hours time. Did a second one for another local rennlister and it went faster as the design work was already done

Hardest part is developing the plan and wire schematic.

 

Just so happens my son is just starting law school at UT. Maybe I can come by and see your plan sometime.