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#1
13th October 2011, 07:56 PM
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Heeeeeelp
I realised that the best course of action as regards checking oil pressure would be to plug in the loom before start up to get the warning lights working (thanks for all the helpful replies by the way!)
HOWEVER!  My test probe tells me that my EARTH CIRUIT IS LIVE  I've got the battery connections on and solid earths from battery to chassis ,engine to chassis and the big wire from the battery to the bell housing near the starter solenoid. Most other major plugs are connected.There's a group of earths with shakeproof ring connectors I've attached to the chassis . I'm baffled( thats a nice way of saying that I don't know what's going on) Any ideas please http://s1189.photobucket.com/albums/z429/ayjay50/ 
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#2
13th October 2011, 08:01 PM
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My best guess would be that you're either missing an earth, one of them isn't getting a good connection, or there's something you need to plug in to complete the circut properly. I was getting all sorts of weird readings off mine at the ignition and other places all because I didn't have the suppressor connected
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#3
13th October 2011, 08:03 PM
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If you only want to check the oil pressure switch use a bulb and it should go out when the pressure comes up.
As for the earth being live it would melt the wiring if that was so. If you are using a test light with two wires ie red and black it will light up on earth.
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Cost : Little as possible. Thanks : To those who by their generosity my build has progressed. Its a handmade sports car not a flaming kit car !!! If at first you dont succeed,avoid skydiving... No parachute require to freefall,only if you want to do it twice.
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#4
13th October 2011, 08:21 PM
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Im using a curcuit tester with an earth clip and a pointed probe which is supposed to show + and -
but the + light shows when I touch the earths Last edited by ayjay : 13th October 2011 at 08:22 PM. Reason: add stuff
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#5
13th October 2011, 08:53 PM
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What are you connecting to what and were?
A disconected earth will show a +Voltage if a probe is placed between it and earth. TT
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You only get a woosh with a dump valve Build Thread Man Cave Mantiques Cecil Street Auto Repairs Garage Carlisle Build Cost £4181.65 - Last - Wheel Cylinders
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