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toeskneez
Samba Member
Joined: July 20, 2025
Posts: 2
Location: Geelong Australia
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 Posted: Sun Jul 20, 2025 6:06 pm Post subject: 1971 Superbug ISP Speedo High Beam Indicator |
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Hi, thanks for letting me join the forum.
We have a 1971 Superbug and have put the ISP speedo/fuel guage combo in it.
All works great except for a weird issue with the Hi Beam indicator!
When the ignition is off, the Hi Beam light works, as soon as we turn the ignition on, the indicator wont work anymore, even though there is power to the indicator! It's doing my head in! If anyone could help I would greatly appreciate it.
Thank you |
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meranda
Samba Member
Joined: August 09, 2015
Posts: 329
Location: Melbourne Australia
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| Posted: Sun Jul 20, 2025 8:28 pm Post subject: Re: 1971 Superbug ISP Speedo High Beam Indicator |
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I don't even know what an ISP speedo is but I know what the fault might be. When the ignition is turned on the light will have 12v on both the centre terminal of the lamp and the outer case. You have plugged the Hi Beam lamp in the correct hole in the speedo not the indicator hole or the oil or gen holes?
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Currently filling the garage
1961 beetle cabrio
1971 Superbug
1974 Porsche 911S Targa
1968 1500 Beetle A Project!
Past Garage fillers dozens of type1 &type3 VWs
Jaguar Mk5 & XK120
Lancia Flavia Coupe
Alfa Guilia sedan |
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toeskneez
Samba Member
Joined: July 20, 2025
Posts: 2
Location: Geelong Australia
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| Posted: Sun Jul 20, 2025 8:34 pm Post subject: Re: 1971 Superbug ISP Speedo High Beam Indicator |
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| meranda wrote: |
| I don't even know what an ISP speedo is but I know what the fault might be. When the ignition is turned on the light will have 12v on both the centre terminal of the lamp and the outer case. You have plugged the Hi Beam lamp in the correct hole in the speedo not the indicator hole or the oil or gen holes? |
Thanks for the reply. Yes it is wired correrctly. The oil and generator lights work as they should, and go out when the engine is started.
The Hi Beam light (these are LED's I think) is a separate wire to the others. As I said, it works as normal when the high beam is turned on without ignition on. |
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johnnyvw164
Samba Member
Joined: July 27, 2020
Posts: 625
Location: South of Raleigh
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| Posted: Mon Jul 21, 2025 9:59 am Post subject: Re: 1971 Superbug ISP Speedo High Beam Indicator |
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| Sounds like you have power for the light coming from the wrong place. Only way is to get a wiring diagram and a meter and follow the paths |
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