| Re: [GMCnet] Power for Running Lights [message #216549] |
Thu, 01 August 2013 16:47  |
rallymaster
Messages: 662
Registered: February 2004
Location: North Plains, ORYGUN
Karma:
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Senior Member |
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Bruce, is there an easy way to add the tail lights to that setup?
I vaguely remember a car that had headlights and tail lights anytime the
engine was running, but don't know how they did it.
May have been a couple of diodes in the light ckts.
Thanks,
Ronc
On Mon, 29 Jul 2013 08:38:28 -0500 Bruce Hislop <bruce@perthcomm.com>
writes:
>
>
> Steve,
> I'm not sure how you are wiring your lights to make Day-time Running
> lights, but its very simple using a horn relay.
>
> Connect one side of the relay coil to the center of the isolator to
> get the "engine running" power. Connect the other side of the relay
> coil to the high-beam light power wire. This way with the engine
> running and the headlights set to OFF, the relay coil will get its
> ground through the low resistance of the high-beam headlight
> filament. When you turn the headlights ON and switch the high-beams
> ON, the relay coil will de-energise and switch off power to the low
> beams. You don't want both high and low beam filaments on at the
> same time.
>
> Connect the common relay terminal through a fuse to battery power
> and the Normally Open to the low-beam light. You could get power
> for the Low-beams from the isolator center terminal and get a higher
> voltage than battery, but for Day-time running lights you don't want
> them brighter than normal.
>
> --
> Bruce Hislop
> ON Canada
> 77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
> Hubler 1 ton front end
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
> My Staff says I never listen to them, or something like that
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Ron & Linda Clark
1978 Eleganza II
North Plains, ORYGUN
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Ron & Linda Clark
North Plains, ORYGUN
78 Eleganza II
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