Clark C500 SERIES:
Back up alarm issues

I hooked up a back up alarm to a Clark c500y s60. The alarm beeps like it should until I start the motor. When it is running the alarm goes nuts. I took the alarm and hooked straight to battery to bypass switch and wires. And it still does it. I have even switched alarms and it still does it. I check the volts on battery Running it is 14.17 and off its 12.4.
I hooked the alarm up to my car battery and it works perfect off or running. The volts on my car are 12.6 off and 14.7. The alarm is rated from 12v to 24.
The weird thing is I installed the same alarm to a newer lift and it works perfect. Then I also installed the same alarm to another older Clark and it does the same thing. A couple different people I spoke to think it could be because the 2 forklifts that the alarm isnt working properly on is because of interference because they have points. And another guy thinks its the spark plugs.
  • Posted 1 Sep 2015 08:00
  • Modified 1 Sep 2015 08:01 by poster
  • Discussion started by Gator
  • Texas, United States
Showing items 1 - 3 of 3 results.
spark plug wires, but the answer is to make what we used to call as hash filter, it's a diode (about a 10d6) and a pancake capacitor, about like what you find between some crown forklift GE contactors.
  • Posted 2 Sep 2015 09:03
  • Reply by edward_t
  • South Carolina, United States
"it's not rocket surgery"
maybe possibility of a constant alarm vs a smart alarm?
  • Posted 2 Sep 2015 01:46
  • Reply by Gator
  • Texas, United States
I was wondering if I could put some kind of resister, filter on the positive side to help correct this issue?
  • Posted 1 Sep 2015 08:04
  • Reply by Gator
  • Texas, United States

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.

Global Industry News
edition #1231 - 22 May 2025
In this week’s Forkliftaction News we look at HD Hyundai XiteSolution’s plans to be the first Korean company to launch medium and heavy-duty electric forklifts to the market, in a move which shows electrification continues to gain momentum throughout the sector internationally... Continue reading
Upcoming in the editorial calendar
Latest job alerts …
Newnan, United States
Flower Mound, United States
St. Louis, MO, United States
Toplift Ferrari TFC36-48
Stoney Creek, Ontario, Canada
Used - Sale
USD1
Toyota 8FGC35U-BCS
Flesherton, Ontario, Canada
Used - Sale
Movers & Shakers
Marko Tulokas Marko Tulokas
president and CEO, Konecranes
Director, solutions development procurement, Dematic
General manager - sales, FM Logistics India
CEO, Caterpillar Inc
Latest job alerts …
Newnan, United States
Flower Mound, United States
St. Louis, MO, United States
Fact of the week
The oldest known unopened bottle of wine was recovered from a tomb in modern-day Germany. The bottle is around 1.5 litres and believed to have been produced between 325 and 350 AD. There are currently no plans to open the bottle.