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ceedy · 7th January 2017, 09:29

A slightly more involved Electrikery thingy I knocked up years ago ..

Only a Dodgy rough Sketch ..

tba

And a parts list from Maplins..and around the home .

Auto reset Fuse ............ AK12N
Resistor 300R...........2 off
Red Button push switch ......JB00A
Black Button Push switch ...JB01B
Bicolour LED .....................QY83E
LED holder to suit .............YY40T
Long case .........................FT31J
large RED croc clip............HF23A
Large Black Croc Clip.........HF23B
small black croc clip .........FK35Q
twin core household type lighting type wire about 5 metres ( to suit length of car) as long as its tough and flexible enough.
odd bits of Wire
Steel rod/long Nail for probe , stick some tape /heat shrink over most of it to stop any shorting out when probing .
The resistors are just to keep the LED from Blowing, so around the 300 ohms range will do .

If you can understand it all , piece of cake to knock up.

Just clip it on the battery and then using the long lead go around the car give any suspect electrical points a good probing ..

Basic circuit is here you can make it however you feel.

The resetable fuse is in case you short it out it will pop and reset after a few seconds

You could just use a fuse holder and blade fuse.

The probe is a bit of steel/brass rod with a point on the end.

NB .If you don't get the RED light testing on a known 12volt point the LED is wired the wrong way round.

Using the probe is quite straight forward by clipping the larger croc clips on the battery

And just using the probe on any connection yuo want to check, the 2 colour LED will show RED if the probed point is live
or show green if it is at earth.

You can also ( with care) Press either the RED button to inject 12 v into the probed point or press the black button to earth the probed point.

The small croc clip is just in case you need another earth point if you are probing some part that is isolated, eg ..mounted in plastic.

It doesn't measure Voltage or amps, use your multimeter for that .

Hope this may help someone... I've found it invaluable..

Chris

7th January 2017, 09:29	#10
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,077 Thanks: 916 Thanked 1,214 Times in 768 Posts	A slightly more involved Electrikery thingy I knocked up years ago .. Only a Dodgy rough Sketch .. tba And a parts list from Maplins..and around the home . Auto reset Fuse ............ AK12N Resistor 300R...........2 off Red Button push switch ......JB00A Black Button Push switch ...JB01B Bicolour LED .....................QY83E LED holder to suit .............YY40T Long case .........................FT31J large RED croc clip............HF23A Large Black Croc Clip.........HF23B small black croc clip .........FK35Q twin core household type lighting type wire about 5 metres ( to suit length of car) as long as its tough and flexible enough. odd bits of Wire Steel rod/long Nail for probe , stick some tape /heat shrink over most of it to stop any shorting out when probing . The resistors are just to keep the LED from Blowing, so around the 300 ohms range will do . If you can understand it all , piece of cake to knock up. Just clip it on the battery and then using the long lead go around the car give any suspect electrical points a good probing .. Basic circuit is here you can make it however you feel. The resetable fuse is in case you short it out it will pop and reset after a few seconds You could just use a fuse holder and blade fuse. The probe is a bit of steel/brass rod with a point on the end. NB .If you don't get the RED light testing on a known 12volt point the LED is wired the wrong way round. Using the probe is quite straight forward by clipping the larger croc clips on the battery And just using the probe on any connection yuo want to check, the 2 colour LED will show RED if the probed point is live or show green if it is at earth. You can also ( with care) Press either the RED button to inject 12 v into the probed point or press the black button to earth the probed point. The small croc clip is just in case you need another earth point if you are probing some part that is isolated, eg ..mounted in plastic. It doesn't measure Voltage or amps, use your multimeter for that . Hope this may help someone... I've found it invaluable.. Chris __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's Last edited by ceedy; 20th October 2018 at 17:50.. Reason: put image back in after photobucket