starter disable help

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brucejf69

Member - Posts: 29

Joined: July 15, 2003

Location: Canada

Posted: October 09, 2004 at 2:08 PM / IP Logged

Hey, the diagram on this site seems to be different and less common than this one http://www.velocitymotorsport.com/images/install_notes/010.jpg

If I am going to use the one shown at velocity motorsprts do I need to put a diode across 85-86. Striped side towards the +12 volt right?

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vancouverbc

Copper - Posts: 72

Joined: September 27, 2004

Location: Canada

Posted: October 09, 2004 at 5:01 PM / IP Logged

"When energizing the coil of a relay, polarity of the coil does not matter unless there is a diode across the coil. If a diode is not present, you may attach positive voltage to either terminal of the coil and negative voltage to the other, otherwise you must connect positive to the side of the coil that the cathode side (side with stripe) of the diode is connected and negative to side of the coil that the anode side of the diode is connected.

Diodes are most often used across the coil to provide a path for current when the current path to the relay is interrupted (i.e. switched off, coil no longer energized). This allows the coil field to collapse without the voltage spike that would otherwise be generated. The diode protects switch or relay contacts and other circuits that may be sensitive to voltage spikes. (JimR, contributor, install bay member) "

The relays I have came with diodes built-in. Diodes increase life of relay and protect any sensitive electronics. Your diagram does not appear to be different from one at this site.

1991 240sx

alarm=model 2620.web central door locking system

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starter disable help

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