1hz troopy Dash lights out

Submitted: Tuesday, Jun 07, 2022 at 19:23
ThreadID: 143815 Views:3356 Replies:6 FollowUps:8
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Hey, So my 1hz troopy, 97, has had the dash lights out for a bit. About a month. I had a wiring malfunction a bit ago and had to re-do the entire harness to the engine bay.
The dash lights stayed on the whole time. Then after the fix they remained on until about a month later they flickered a bit, over bumps etc, then they're off. Even the solenoid for the glow plugs wont kick in. So my guess is the alternator, a plug maybe, or an earth. OR, the actual solenoid switch.

Just after some thoughts.


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Reply By: Member - McLaren3030 - Wednesday, Jun 08, 2022 at 08:42

Wednesday, Jun 08, 2022 at 08:42
Hi Keiran,

I guess the obvious things to check for would be a blown fuse, or a loose wire.

Macca.
Macca.

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AnswerID: 640792

Follow Up By: Keiran K - Thursday, Jun 09, 2022 at 08:31

Thursday, Jun 09, 2022 at 08:31
Thanks for the reply, yip, I'll definitely check some wiring.
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Reply By: qldcamper - Wednesday, Jun 08, 2022 at 17:27

Wednesday, Jun 08, 2022 at 17:27
Dash warning lights or dash illumination lights?
AnswerID: 640803

Follow Up By: Keiran K - Thursday, Jun 09, 2022 at 08:32

Thursday, Jun 09, 2022 at 08:32
All the acc lights in the dash except the high beams, and handbrake light.
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FollowupID: 919861

Reply By: 2517. - Thursday, Jun 09, 2022 at 10:34

Thursday, Jun 09, 2022 at 10:34
I had a 80 series with similar problem,turns out to be the plug from the alternator in the engine bay where it joined the loom.
AnswerID: 640813

Follow Up By: Keiran K - Thursday, Jun 09, 2022 at 13:07

Thursday, Jun 09, 2022 at 13:07
Nice. I was thinking this little square plug or an earth. Thanks so much for the help, I'll take a look and get back to everyone with what I find.
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Reply By: qldcamper - Saturday, Jun 11, 2022 at 10:21

Saturday, Jun 11, 2022 at 10:21
The alternator puts all those lights on if it isnt excited and the ignition is turned on as a test function. If they are all on then either the alternator is nackered or a wiring fault is preventing it from exciting.
AnswerID: 640822

Follow Up By: Keiran K - Sunday, Jun 12, 2022 at 11:26

Sunday, Jun 12, 2022 at 11:26
Thank you for this... What is it you mean by exciting? I'm not sure I understand the language here sorry.
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Follow Up By: qldcamper - Tuesday, Jun 14, 2022 at 07:33

Tuesday, Jun 14, 2022 at 07:33
Sorry missed that question.
Excitation is a term used to describe the state of the alternator, when its own power production reaches the point where it can supply its own field current without needing the current from the warning light to supply a small magnetic field, when the stator voltage is high enough to turn on the field diodes in a 9 diode alternator.
Put simply, the point when the alternator is turning fast enough to start charging.
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FollowupID: 919926

Reply By: Keiran K - Sunday, Jun 12, 2022 at 11:25

Sunday, Jun 12, 2022 at 11:25
OKay, love everyones replies.

So I had a week look yesterday. Finally had a minute. And its the small oval plug into the back of the alternator. one of the wires has severed at the base of the plug. So Im going to have to order a new plug and wire it into the existing loom... I'm going to replace some of the loom as it's pretty knackered from old oil etc... I've already re-wired some of the loom back to the fuel tanks from the starter side and under the batteries.

So, my Wednesday I'll be elbows deep in solder and copper I feels.

If there is anything else I should consider I'd love a heads up.

AnswerID: 640831

Follow Up By: Allan B (Sunshine Coast) - Sunday, Jun 12, 2022 at 16:36

Sunday, Jun 12, 2022 at 16:36
.
Some of those plugs can be tricky to connect to existing wiring and can even require special tools. If you can obtain a plug with wire tails attached it may make for easier installation. Such may perhaps be obtained cheaply from a wrecker.
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Follow Up By: Keiran K - Monday, Jun 13, 2022 at 19:57

Monday, Jun 13, 2022 at 19:57
Truth. One of the guys I work with suggested just re seating the wires. I'm good to be honest. A new plug is about $20, or there's been some excellent suggestions which I'll likely try out. I've got zero desire to muck around with trying to pull wires out of the plug haha.

thanks for the excellent feedback. Appreciate it.
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FollowupID: 919921

Reply By: qldcamper - Sunday, Jun 12, 2022 at 19:19

Sunday, Jun 12, 2022 at 19:19
Try an auto sparky, quite often replacement alternators come with adaptor harnesses and most of us end up with a range of various unused ones.
Just remember as long as those lights are on the alternator is probably not charging or even worse over charging.
In a pinch you can get speaker sized individual crimps that you can use to get out of trouble to buy time if you have no other transport, just put an insulating sleeve over the centre one to prevent any mishaps and disconnect the battery before doing anything.
AnswerID: 640836

Follow Up By: Keiran K - Monday, Jun 13, 2022 at 19:54

Monday, Jun 13, 2022 at 19:54
of course! genius. I didn't even think of that. I've actually got a couple of tubs of spare elec clips. And yes thanks!!!! But I wont be doing that, filming in some back country locations right now, so I cant risk getting stuff wet. Im just manually warming the glowplugs at the minute.

Solid point about the alt too and the dash lights. you've made me want to test the alternator output to make sure it's not doing weird stuff.

Big help! Thank you
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