Gauges not working

[griff59]

I’ve got no dash gauges working, all dead, I know it may be a fuse, I haven’t had time to have a look, anyone any idea what fuse it could be? I think the fuse box is located near the battery? I’m not in any way a DIY or technical guy, just wanted to check with you guys before I have a go at changing it.

[BIG DUNC]

I am not aware of a fuse for all the gauges, but happy to be corrected on that.
Are the switches on the dashboard functioning?
When you say "all the gauges" are including the speedo and rev counter, or do you just mean the four smaller gauges.
Is the switch for the instrument lighting working?
I am thinking a problem with one of the connectors on the back of the dashboard.
Edited to add, what year of Griff is it?

[DVR V8]

9 in from the left? 10A, instruments/dashboard ignition feed.

[BIG DUNC]

Do you have ignition?

It certainly would not harm checking that fuse.

What year is your Griff?

[5.0ltr]

[griff59]

5.0ltr said:

Ha! Yes, thanks for that.
I have ignition, it’s just the four gauges, that aren’t working, I’m guessing it’s the fuse, I’ll have a look today.

Many thanks.

[griff59]

Hi all, fuse is fine, the ignition and battery warning light stays on when the engine is running.
I’m puzzled.

BIG DUNC said:

I am not aware of a fuse for all the gauges, but happy to be corrected on that.
Are the switches on the dashboard functioning?
When you say "all the gauges" are including the speedo and rev counter, or do you just mean the four smaller gauges.
Is the switch for the instrument lighting working?
I am thinking a problem with one of the connectors on the back of the dashboard.
Edited to add, what year of Griff is it?

All other things work, dash lights, switch etc, it’s a 95 Griff 500.

Edited by griff59 on Saturday 25th March 11:43

Edited by griff59 on Saturday 25th March 11:44

[Johno]

griff59 said:

Hi all, fuse is fine, the ignition and battery warning light stays on when the engine is running.
I’m puzzled.

Edited by griff59 on Saturday 25th March 11:44

Battery and ignition light stays on? Have you checked the 100amp fuses. Mine has 2, one in the footwell and one on the chassis.

Have you checked the battery is charging? As you're aware, they should extinguish once running, which suggests an alternator/fuse/charging issue possibly.

[Loubaruch]

Some of the guages are powered via a daisy chain of wires i.e. in parallel so if the first connection to the power is open circuit none will function.
Quite likely that a spade connector has worked loose. Have you been fitting a radio or taken the dash off as this often loosens a connector.

[DVR V8]

Just to narrow it down a little more if the 4 gauges illuminate when the side light switch is operated you know that negative is OK.

[griff59]

Johno said:

Battery and ignition light stays on? Have you checked the 100amp fuses. Mine has 2, one in the footwell and one on the chassis.

Have you checked the battery is charging? As you're aware, they should extinguish once running, which suggests an alternator/fuse/charging issue possibly.

Haven’t checked the 100amp fuses, are they easy to get at? Only saying because I’m not that able, to crawl about.
I’ve got the car on a battery conditioner, and it reads fine, when I connect it, but that’s going in through the cigarette lighter, so I think, that’s not a good way of telling if it’s charging normally.

Edited by griff59 on Sunday 26th March 11:03

DVR V8 said:

Just to narrow it down a little more if the 4 gauges illuminate when the side light switch is operated you know that negative is OK.

Thanks, yes, everything else seems to work fine.

Edited by griff59 on Sunday 26th March 11:05

[sixor8]

Are you able read the battery voltage with the engine running? It should be 13v - 14V and charging. If not, the 100A fuse may be broken (it's usually in a black fuse holder on the o/s centre chassis rail), that or the alternator output is no good.

ETA: This is a typical photo but yours may be slightly different:

Edited by sixor8 on Sunday 26th March 11:13

[griff59]

sixor8 said:

Are you able read the battery voltage with the engine running? It should be 13v - 14V and charging. If not, the 100A fuse may be broken (it's usually in a black fuse holder on the o/s centre chassis rail), that or the alternator output is no good.

ETA: This is a typical photo but yours may be slightly different:

Edited by sixor8 on Sunday 26th March 11:13

Thanks very much, I’ll go out and check the battery this morning, with my volt meter.

[DVR V8]

I assume we're talking about the 4 gauges above the radio but the time clock is fed from a different fuse to the other 3(battery feed, not ignition)so a dash interconnect has come slightly apart or a negative is open circuit to those 4 gauges.