Gipsy wrote:Maybe the light itself is blown... Try a resistance check across the plug connection.
Gipsy wrote:Maybe the old light is a ring-in put there by the bullbar manufacturer? The Toyota one maybe looks identical but the bullbar one is wired different.
ptommo59 wrote:HI erkilux ,
Go to https://toyotamanuals.com.au/
Select the accessories option and put these part numbers in and then download the harness installation instructions which have a wiring diagram in them (Seems you old light was DRL/Parker only and new one also has an indicator function)
PZQ85-89235 - Lo Grade Patch Harness (3 pin to DRL/Parker)
PZQ85-89245 - Hi Grade Patch Harness (6 pin to DRL/Parker/Indicator)
You may be able to use the harness number to find the matching light or if not re-terminate the new light with the connector/cable from your broken light using the wiring diagrams as a guide.
(You didn't specify year so if these don't match try finding the equivalent that does)
Edit: Miss read the diagram they both connect to the new 6 pin light type but the Lo Grade has the vehicle 3 pin DRL/Parker connector as an input so may still be a guide to connections.
Hope this helps
dave g wrote:Just had a look at the photos
The spare parts have given you the wrong light
They have more than one harness in the hilux to suit the different set ups same with fog lights same with out there is 4 or 5 different ones.
Rob_Wood wrote:Gipsy wrote:Maybe the light itself is blown... Try a resistance check across the plug connection.
Won't work properly on LEDs, Diodes have a special setting (and need correct polarity) when testing them with multimetres. You also need to remember that these moulded light fittings usually have more than just a diode, they will likely have small integrated circuits enclosed into the moulded fitting as well.
ptommo59 wrote:HI erkilux ,
Did a bit of digging and they completely changed the hilux bullbar harness and light switching arrangement during the Aug 2020 updates (which those docs I listed above are for).
I thought yours was only two light due to only three wires assuming one was the earth but as you mention it seems that it uses the aluminium body as the earth for all three lights.
I did find the harness numbers for the earlier model bullbar (PZQ8589590) in this bullbar installation doc PZQ2989272 but there was no info for it on the site I listed so not much help.
As you say its a pain that none of the online Toyota parts catalogues like amayama and partsouq etc seem to cover accessories so you cant check for stock availability and part number supersessions.
Don't know if anyone recognises the logo on your original light. That might give an indication who the actual manufacturer that supplies to Toyota is, as then you might be able so search their website to see if its still available under a different part number or if they have an equivalent that would work in you application.
Edit: Found the Install Instructions that match your light. Go to the Toyota site and put in PZQ2989281 and download the top two files. At the rear of the install instructions is the wiring diagram covering your three wire light which is actually connected to an ECU mounted on the lefthand upright of your bull bar. If nothing else now you at least have a wiring diagram.
erkilux wrote:
Main difference seems to be that the old version had an ECU on the bullbar but the new lights have their own ECUs inside. So for the LH lamp I'll bypass the old ECU and wire the inputs into the new light. Should get me going I think
Rob_Wood wrote:Long shot I know, but have a quick look to see if the plugs upstream of the ECU on the bullbar might fit the plugs on the new light fittings. Just a thought!
erkilux wrote: ... wired up a 6-pin Deutsch connector. Once plugged in everything worked as it should. Hope that helps someone one day
Rob_Wood wrote:Long shot I know, but have a quick look to see if the plugs upstream of the ECU on the bullbar might fit the plugs on the new light fittings. Just a thought!
erkilux wrote:Unfortunately they didn't! Old harness and the updated version are just so different that I don't think any patch lead could make it work. But a couple of diagrams, a soldering iron and a cold beer sure can
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