Electrical question

[droopie85gt]

Does anyone know where the power comes into the dash...into the fuse panel from? I have the Nordskog digital panel and it's sensitive to voltage drop. When my headlights are one and my a/c is running, it says I am at 238 degrees, but my volt meter drops to 12.1. Instantly when I turn off the headlights and a/c my voltmeter jumps to 13.5+ and my temp Instantly drops to 200.

I used the factory 12v lead for the cluster, then got an add a circuit plug in fuse and probed all over the fuse panel find fuses that don't drop voltage when the starter is engaged. There aren't many...most drop. I am trying to avoid a rat's nest of extra wiring, and looking to avoid putting a relay and power feed directly from the battery to the gauges, but I guess that's what I'll have to break down and do.

[bigjason_5]

Sounds like you don't have enough power from the alternator. Did you check voltage at the battery with all your consumers on?

[Ltngdrvr]

Do you have underdrives and or a stock alternator?

[TWR2003]

If your digital gauges fluctuate in reading due to variations in line voltage of ~+/-2 volts then Id say those digital gauges are poorly designed. Variation of +/-2 volts is NORMAL for a normally operating system with varying loads. For all the stones thrown at the stock gauge system (and Ive thrown my own) the use of an IVR that drops voltage to ~5V at the gauges generally alleviates gauge fluctuations due to normal line voltage fluctuations.

T