 Powering a light with two different sources of 12 Volt power, one doesn't affect the other |
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| Tom |
 Sep 22 2012, 01:48 PM
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Advanced Member  Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None  |
Possible by using two steering diodes. I believe 1N4001 diodes will support 1 amp. Should be more than enough for a small indicator lamp.
Jim, one power from relay ( black/yellow), other from fan. Tom Attached thumbnail(s) 
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| tradisrad |
Sep 22 2012, 05:08 PM
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Senior Member Group: Members Posts: 985 Joined: 11-September 06 From: San Mateo, CA Member No.: 6,815 Region Association: Northern California |
If the EGR indicator is nonfunctional disconnect its wire from the dash and attach your fan wire.
I installed an LED into my oil temp gauge to indicate when my fan is on.  |
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Posts in this topic
Tom Powering a light with two different sources of 12 Volt power Sep 22 2012, 01:48 PM
jim_hoyland I am attempting to use some of the CAT wiring to t... Sep 22 2012, 03:47 PM
jim_hoyland
If the EGR indicator is nonfunctional disconnect ... Sep 22 2012, 05:52 PM Cap'n Krusty Had me baffled for a moment, then I decided you me... Sep 22 2012, 05:09 PM tradisrad I bought the LED at Frys Electronics. I was sure t... Sep 22 2012, 09:06 PM kg6dxn
Possible by using two steering diodes. I believe ... Sep 22 2012, 09:11 PM Tom Mike,
Yes, two different power sources to li... Sep 23 2012, 02:02 AM |
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