How to ground the cluster - Where is the P-ground, or easy way to add another?
 

My cluster needs better electrical grounding. My oil pressure needle swings like a bad ground, and I just had the oil pressure sender replaced. My speedo needle bounces a little bit at slow speeds, and I've even seen my fuel needle twitch.

The grounds under the dash (on the floor, looking up) are good, I cleaned them anyway and they were pretty mint.

Where is the electrical for the gauges grounded, or where to where can I add a wire? Thank you so much! Car is coming along so great! SmileWavy

Have you seen this;

http://www.pelicanparts.com/techarticles/944_taillight/944_gauge_problems.htm

I have but was hoping I didn't need to pull the steering wheel/trim just to 'check' that. Is that my only/best course? SmileWavy

man I love this site. My gas guage never goes past 3/4 and sometimes at idle the speedo needle will bounce a bit. I guess I will be pulling out my cluster too.

-> add one more project to the ol' 944 to do list.

Probably. I also remember reading something about adding an additional ground wire from the instruments to the dash frame can fix this. Either way you'll need to pull the instruments.