Hi folks,

Not so much a question, more a document of what I did/found putting LED indicators in at the rear of my 2005 GV.

Firstly, it's been mentioned in the past that the polarity is strange on the GV's in their wiring, I can confirm this isn't the case on mine. Central pin is positive which is 'standard', so the LED bulbs in the rear will work fine.
The fit, etc were fine too for the bulbs I picked up from ebay


But they didn't have built-in canbus, or load resistor and this is where I had a problem, the normal bulbs are 21W and by a few rough calculations these take only 2 watts, therefore the dreaded fast flash or hyperflash.
Annoyingly when testing I only used the double-indicators/hazards which didn't show this behaviour, however when using normal turn indicators they did this.
So a bit of maths later I found I'd need an 8.2 ohm 19 or 20 watt resistor as the load resistor (and dissipate that excess wattage). So if you're going to do the same, make sure you get the load resistor too, or replace the flasher unit itself.

Since this was a rush as MOT is in a week I just got a couple of normal orange incandescent bulbs until I can sort this problem out properly (something doesn't sit right in my head putting in load resistors to 'waste' energy!).

For the long explanation with all the maths I've written it up on my blog if anyones interested Andy Brown's blog - Stuff that I think of including Arduino, CCTV, TVHeadend and Kodi stuff: 12v LED indicator bulbs for Chrysler grand voyager

 

Nice one Andy ............ again.

 

Here's small diagrams I made of the rear light plugs on my 2003 Voyager CRD Ltd. If you notice there's one wire carrying away 2/3 earths, which is the metal work carrying the bulbs. Think if I remember the other bulbs are earthed on separate metalwork frame. There is of course an earth wire to this frame.

 

Cheers QinteQ, always a handy reference, if nothing else for myself as I'm so forgetful!
And thanks for the diagram goggs, was thinking I should have done the same when I was wiring my rear reverse camera up, handy to have though, ta