Volt meter question, Secondary added question |
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Volt meter question, Secondary added question |
Menmojo |
Jul 26 2022, 08:14 PM
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#1
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Porsche addict Group: Members Posts: 49 Joined: 7-July 15 From: Midwest Member No.: 18,929 Region Association: None |
I’m working on a 1975 914. I just replaced a non working volt meter with a working period correct vdo volt meter. When the car is shut off the volt meter is reading the voltage.
Is this correct? Is the volt meter supposed to be switched on with the ignition or does it always show the voltage? I’m concerned that it will slowly drain the battery. The car has the stock wiring harness and originally came with a center gauge package. |
emerygt350 |
Jul 27 2022, 04:19 AM
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#2
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Advanced Member Group: Members Posts: 2,138 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
As I said, with the original wiring it is worthless. I put a relay in the car that connects it to straight battery voltage and now it works great. I used the original wires to trigger the relay.
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slotty008 |
Jul 29 2022, 02:05 PM
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#3
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Member Group: Members Posts: 191 Joined: 11-November 15 From: Belgium Member No.: 19,349 Region Association: None |
As I said, with the original wiring it is worthless. I put a relay in the car that connects it to straight battery voltage and now it works great. I used the original wires to trigger the relay. I always found it very weird that the voltmeter dropped when using the turn signal and even more when braking simultaneously. When I put on the the ventilator it drops to 10 volts. So I think it's a good idea to connect it directly to the battery using a relay. After almost 7 years of ownership I still learn a lot. (IMG:style_emoticons/default/beerchug.gif) Thanks for the tip. |
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