Isolator switch

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Haggisrider

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  • Name: Tom McIlree
Isolator switch
« on: March 06, 2021, 10:05:31 PM »
Fitting an isolator switch to the def90 and need some help
Are the two terminals on it one for positive and one for negative or is it only for the positive lead to the battery
Where would be the best place to locate it on the left wing just in front of the vent or inside the cab which would mean drilling a hole in the bulkhead
Any advice would be helpful
Thanks Tom

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ZebraDriver

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Re: Isolator switch
« Reply #1 on: March 07, 2021, 03:17:28 PM »
Just two heavy terminals?  Assuming you have an alternator, being a 90 it should have, then you should have the more complex switch and resistor etc to prevent alternator damage if it's switched off with the engine running. The heavy terminals should break into the positive feed to the battery. DO NOT connect it to positive and negative as this will short out the battery, the resulting fire might be difficult to explain to your insurance company.  Position of the switch depends on what you want to use it for, if its for competition use then the read the relevant regulations.

But if it has four heavy terminals then it can disconnect both positive and negative ......

ZD

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Haggisrider

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  • Posts: 53
  • Name: Tom McIlree
Re: Isolator switch
« Reply #2 on: March 07, 2021, 10:13:11 PM »
Thanks zd