indicator

Hi hope someone can help i have an ex army 110 na 2.5 it just failed mot on front driver side indicator not working (ahhhhh) it is driving me nuts

I managed to removed the bulb and that is OK checked with multi meter and battery to be sure it was working
The rest of the circuit inc hazards works this includes the rear right hand side and the small repeater unit on the front wing, i have removed the complete bulb holder and rubber boot, cut the loom and soldered and heat shrinked a new section in (about 6 inches of cable) as it did work once with a bit of wiggling but then gave up the ghost with no power 12 volts at the bulb holder if anyone has any suggestions i would be grateful as next step is pay an auto electrician and i am on tight budget as need an top end rebuild

thanks

cadlean

Have you tried a new bulb? Sometimes the + 'tip' (the silver dot on the base of the bulb) is too short, so the bulb is fine but just not making a connection.
If you're getting 12v at the holder you can't have too much wrong.

As I understand it (and I know less than 5/8's of f*ck all) its possible to have 12 volts in a wire but not enough power - amps - to actually do anything. A mate told me to make a tester with an indicator bulb with a couple of wires soldered onto the relevent contacts with small croc clips at t'other ends. Easy to check for 12v under load as the brightness of the bulb will be a good indication. Also meant to be able to find a short with it but of course I've forgotton how to do that.

Bad earth?

Cherck your earths!

There's very little in the way of wiring between the side repeater and the indicator unit - check the connections. You can prove the unit by removing it and testing at the battery terminals.

bluedog333 said:

If you're getting 12v at the holder you can't have too much wrong.

Click to expand...

You can. It'll be a dodgy earth most likely.

Op.

All you can do is trace the fault.

1. Check bulb
2. Check for power
3. Check earth
4. Move along the wiring
5. Check fuse
6. Check switch

The wiring is pretty simple on these, but is often a source of problems. In my experience bad earths are very common.

If you haven't got one already, get yourself a simple 12v circuit tester (looks like a screw driver with a small bulb in the handle and a length of wire with a clip on it coming out the handle). Very easy to check the wiring with these.

1. Find a good known earthing point, check it using the + terminal on the battery if need be. i.e. clip the wire to the positive terminal and touch the screw driver end to the earth.

2. Using your good earthing point, check the positive wire to the bulb. If it lights up, you know you have power there.
3. Now using your positive source, that you know works, check that the earth works.