Jumping Voltage Gauge

[grady]

My voltage gauge behaves normally (lower with load) most of the time but then fluctuates wildly (in time with the flasher relay) when either turn signal is on.

Is this a sign of a bad voltage stabilizer (somewhere) or is this normal?

[HarryW]

Possibily a bad earth on one of the lamps, mine does something similar, I then know its time to clean up the rear earth stud on the V8S to clear it, until the next time

Harry

[GreenV8S]

My V8S had exactly those symptons, the voltage dipped alarmingly wqhen I turned on lights, heater fan, even small loads like indicators. It turned out that an awful lot of ignition-switched loads go directly through the ignition switch. Probably perfectly OK when it was new but not after ten years of contact wear and corrosion - there was a huge voltage drop across the switch when everything was turned on. The wiring diagram in the bible shows these loads going through two relays, but the person who wired my car obviously hadn't read it. In the end I added in the relays myself and it's been fine ever since. Worth checking the voltage drop across the ignition switch, and also across the connector between the switch amd the loom. Also switch everything on and see whether anything round there is getting hot.

[taimar78]

I had a problem with the voltage gauge on my previous Tasmin.......it and the temp. gauge beside it, would
move in corresponding reverse directions. Turned out to be the voltage stabilizer behind the dash.
Once replaced, everything fine.

[350matt]

What stabilizer? I've still yet to get round to fitting one to my 350, as TVR certainly left it out.....

[blaineuk]

mine does the same and when you open/close the drivers door all the gauge readings change. just another job to sort one day

[jmorgan]

My early 350 acted as if a stabiliser was fitted, nice and calm, and the 400 does what the subject of this thread is.

[grady]

Maybe mine wants to be a 400.