Anyone know what the coil DC resistance is on typical 12V horn and headlight relays?
Regards,
Eric Lenius
12 Volt relay DC resistance
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Re: 12 Volt relay DC resistance
Eric
usually around 2-3 ohms for the coil.
usually around 2-3 ohms for the coil.
John Brooks
62 Roadster
66 912
84 Cab
getting pushed around in porsches since 1965
62 Roadster
66 912
84 Cab
getting pushed around in porsches since 1965
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- 356 Fan
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Re: 12 Volt relay DC resistance
Do you mean 20 to 30 ohms?. At 2 ohms, the coil would draw 6 Amps at 12V. Dissipating 72Watts. Which, would result in a barbequed coil I think.
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Re: 12 Volt relay DC resistance
12v relays around 80 ohms.
6v relays around 40 ohms
6v relays around 40 ohms
- John Brooks
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Re: 12 Volt relay DC resistance
Eric
I need to get one of thoes new digital meters. You are right the X10 switch makes the scale different. I just re read the relay, 27 ohms on the 6v and 77 on a 12v
I need to get one of thoes new digital meters. You are right the X10 switch makes the scale different. I just re read the relay, 27 ohms on the 6v and 77 on a 12v
John Brooks
62 Roadster
66 912
84 Cab
getting pushed around in porsches since 1965
62 Roadster
66 912
84 Cab
getting pushed around in porsches since 1965
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- 356 Fan
- Posts: 470
- Joined: Fri Oct 30, 2015 11:12 pm
- Tag: More is More
- Location: Port Orchard, WA
Re: 12 Volt relay DC resistance
Hi John,
Which relays are you checking? The resistance is different on the horn relays and the headlight relays I think....
Which relays are you checking? The resistance is different on the horn relays and the headlight relays I think....