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Subject Greddy EGT gauge : do I need a permanent +12V ?
     
Posted by Dark Diver on November 09, 2007 at 3:46 PM
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Message I'm installing my Greddy EGT gauge. The power source harness has 4 wires :

My question is about the red and orange lines. I presume the red is a permanent +12V and the orange is a switched +12V, when ignition is on.

My gauge doesn't have memory, so I don't see why it could need a permanent +12V. I presume they use the same harness for all their products, so with other gauges the permanent +12V could be necessary.

But in my case, can I connect both red and orange wires together, to an ignition line ?

Thanks

     
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