Author Topic: 1968 speed warning indicator  (Read 461 times)

hotrod68

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1968 speed warning indicator
« on: April 25, 2014, 06:00:48 AM »
  Hi folks. Can anyone explain how the electrical part of the speed warning indicator works on a 1968 Camaro? I've gotten an aftermarket speedometer with the needle and cable, and the wiring harness. But I can't find a buzzer except on Ebay, and all of those have 3 terminals on them. The speedometer itself has black and brown wires, the harness has a pink and a white wire. Is the black speedometer wire a ground? It looks to me as if the black wire grounds to the cluster and the harness wires are both hot. Is the needle the switch that connects the 2 hot wires so that the buzzer goes off? That would explain the 3rd terminal on the buzzer, where the wire from the speedometer would plug in. If not, what makes it trigger when the speedometer indicator needle eclipses the speed warning needle? Also, when the speedometer needle gets to the preset speed, is it supposed to stop where the warning needle is set? Anything to help me understand this system would be greatly appreciated. Thanks!
HotRod'68  1968 SS350 coupe undergoing frame-off resto/rod. 386/350/4.11s
Butternut Yellow    black standard interior

ZLP955

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Re: 1968 speed warning indicator
« Reply #1 on: April 25, 2014, 09:58:27 AM »
Although it's related to the 69 model year, this thread over at Team Camaro explains how the system functions, and why the buzzer has 3 terminals:
http://www.camaros.net/forums/showthread.php?t=267681
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

Ed_B

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Re: 1968 speed warning indicator
« Reply #2 on: April 26, 2014, 07:40:10 PM »
Kurt asked me to post this. I drew it up a few weeks ago when I was working on mine.

Ed


ZLP955

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Re: 1968 speed warning indicator
« Reply #3 on: April 28, 2014, 01:05:31 PM »
Nice work Ed!
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP