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View Full Version : 2004 Dual Cab zd30di auto reverse lights on


mevz13
18th July 2018, 08:39 PM
Hey all just got a quick confused question as soon as I put my Lights on my reverse lights are on BUT main twist is now while driving lights off and then when I put lights on car drops a gear turn lights off car goes up a gear even tested it with cruise control and freaked me out. Anyone got suggestions or ideas please guys
Yeti's Beast
18th July 2018, 08:52 PM
Don’t quote me but it sounds like a bad earth


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happygu
19th July 2018, 05:07 AM
Sounds like a wiring issue ....

It the Driving Light Switch linked in with the Highbeam, so that you cannot turn the driving lights on without highbeam being engaged too?

Where is the power feed for the driving lights picked up from - I would disconnect and re-connect straight from a fuse off the battery
mevz13
19th July 2018, 11:46 AM
Nah I can turn on Parker’s driving lights n high beam one at a time no worries there
4bye4
19th July 2018, 02:41 PM
I recon Yeti's Beast is on the money with earth problem. It may be that the lights are partially earthing back through the gearbox ECU giving an indication that it should change gear. I dont know anything about how to rest it but someone here may. Is Yendor still here? he may know.
the evil twin
19th July 2018, 05:03 PM
snip... Is Yendor still here? he may know.

Nah, Rodney isn't here ATM, he got wacked with the ban stick.

FWIW I agree with you guys and I would be checking LH tail light earth (and also trailer plug if fitted)... unless OP has aftermarket mods IE extra reversing lamps in which case I would disco them and see if the prob is still there
mudski
19th July 2018, 05:23 PM
Nah, Rodney isn't here ATM, he got wacked with the ban stick.


And I didn't even notice he wasn't here anymore. And its been nearly 12 months. Lol. Its a big rock I have here....
the evil twin
19th July 2018, 07:01 PM
And I didn't even notice he wasn't here anymore. And its been nearly 12 months. Lol. Its a big rock I have here....

ROFL... I miss him, he was one clued up fella for the elecktrickery thats for sure
mudski
19th July 2018, 08:56 PM
ROFL... I miss him, he was one clued up fella for the elecktrickery thats for sure

Yes that he was for sure.
mevz13
20th July 2018, 01:31 AM
Checked the lights-wiring-plugs-trailer plug and connectors cleaned them all up still the same. Attacked few earths before it got dark and no luck so far will definitely keep going and checking rest of earths. Thanks guys
happygu
20th July 2018, 08:28 PM
If it is an earth problem, I would be concentrating on the rear light cluster earth, and the earth for the driving lights, as these are the two problem areas that you have mentioned.

I would specifically be looking at the Reverse Light problem, as these are connected into the main harness and thus into the gearbox harness through the reverse switching, or the pickup feed for the driving lights, as picking up the power feed for these items from the wrong point can cause signal change at the ECU, causing the ECU to do unexpected things