peter8315
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as per title, i keep losing my oil pressure light, no power to oil pressure switch, it will be ok for a bit then disapear
is there a relay for oil pressure ?
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tomcat59alan
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Bad contact?
peter8315
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wich contact??, i have tested feed wire to oil pressure switch and its dead
tomcat59alan
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Well I would be looking at the gauge end then. The switch is a variable earth (from memory) so there is an intermittent supply to/ from the gauge.
peter8315
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when you say switch, do you mean relay switch, if so my origanal question was , is there a relay on the oil pressure,
tomcat59alan
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Oil pressure switch.
peter8315
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fitted new lucas pressure switch today,and the way i understood it is that 12v feed to switch and earthed = oil light on. oil pressure rises as engine starts and switch cut feed = oil light goes off, please correct me if this is wrong
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What year and engine?
peter8315
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1986 200tdi
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Ahh....I have wiring diagrams back to 1987....but the 200TDi engine wasn't around in 1986........where is the engine originally from?
I am sure there isn't one mind!
I am sure there isn't one mind!
Last edited:
tomcat59alan
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Sorry thinking of the pressure gauge switch, you are correct so I would be checking where the 12v supply comes from. I'm struggling with a new wiring loom for the E type at the moment hence the mix up. Start by trying to get a wiring diagram for your motor
peter8315
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looks like i will have to wire a different set up in, i will run a new feed off the ignition through a bulb + holder set it dash down to oil pressure switch, this does work as i have tried it before, i looked in a workshop manual today and it seems there isn't a relay for it
Datatek
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That should be fine, not seen a relay in a normal oil pressure circuit.
Consider an LED for the lamp, less load on the switch
peter8315
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good thinking datatec
