weird gauges prob

[karl_2ltGC]

i got a few guages(vdo), and it seem the temperature works fine, but not when the ignition is in the ON position(motor on or off makes no diff)

There wired correcty and work fine, but when in the ON position they go to what they should be, then bounce back to there minimum reading then jump back again, this happens avery 1-2 seconds or so, and if its not doing that then it just goes stupid.


Any help much appreciated
Karl

[smeck]

Sounds like a bad earth somewhere in your elec system.

[karl_2ltGC]

Originally posted by smeck
Sounds like a bad earth somewhere in your elec system.

but why would it only happen when the ignition is On?

[RealizE]

Arent the guages only meant to work when the ignition is in the ON position? By that i mean, they shouldnt be doing anything when in the OFF and ACC positions ?

[karl_2ltGC]

Originally posted by RealizE
Arent the guages only meant to work when the ignition is in the ON position? By that i mean, they shouldnt be doing anything when in the OFF and ACC positions ?

i hooked em up to straigt 12V so i can make sure they work.