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Oil Pressure Switch


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#1 Mat Jackson

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Posted 17 May 2019 - 07:19 PM

My oil warming light is not working (along side my other issues!!) - going to investigate tonight but want to check the following.

There is a single feed, so I’m assuming this is a 12v feed from the dash light to the pressure switch, which is nc until upto pressure when it then opens....


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#2 TheHood

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Posted 17 May 2019 - 07:28 PM

Yes that's correct. Try grounding the connector to the block with a jumper wire to see if the light comes on.

#3 vocky

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Posted 18 May 2019 - 07:11 AM

the oil pressure switch is just a ground wire, so no oil pressure creates a negative feed to the dash light, oil pressure cuts the negative feed and thus the light goes out.



#4 Mat Jackson

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Posted 18 May 2019 - 07:45 AM

the oil pressure switch is just a ground wire, so no oil pressure creates a negative feed to the dash light, oil pressure cuts the negative feed and thus the light goes out.


Thanks - so if I bypass the switch and ground the wire directly the light should come on - so resting g if it’s wire or switch...


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#5 vocky

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Posted 18 May 2019 - 08:06 AM

correct

 

ps: I have a spare new oil pressure sender if yours is duff

 

pps: brown/blue is the wire colour - https://www.speedste...m/Instument.pdf



#6 Mat Jackson

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Posted 18 May 2019 - 04:18 PM

Dodgey sensor confirmed!!!


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