How to Rewire 4th Gen Rear Window Light?

Post by **Vtecmec** » Fri Jul 11, 2014 1:43 pm

Just popped some new bulbs into the 'Prelude rear light' in the back window on my 4th, unfortunately I get nothing, with the sidelights or the brakes.

Has anyone been through the mission of tracing the OEM wiring for this and knows where it all leads? I can't find anything in the manual for this (JDM Yo). I'm hoping someone can save me stripping half the interior (again).

Dbo · Post by **Dbo** » Fri Jul 11, 2014 1:49 pm

When you find out tell me too...
mine gave up. No live feed to it and no fuse anywhere in the car...

bb1boy · Post by **bb1boy** » Fri Jul 11, 2014 1:51 pm

Just a thought, but pop off the roof panel and check the wires. Mine didn't work and when I checked, the wires had been pinch/cut with the roof panel..

Post by **Vtecmec** » Fri Jul 11, 2014 1:54 pm

The wiring in the roof is ok, I hope so anyway as I've just put it all back together.

Well, I've just found the wiring diagram in the manual for it's use as a high level brake light (P23-257), looks like two green/blue wires should feed it from each of the rear lights, so I'll have a dig around the rear lights later to see if I can find anything.

Post by **Vtecmec** » Fri Jul 11, 2014 2:49 pm

@Dbo Ok, so there are 2 green/blue wires in the n/s rear light cluster (top left and top right of the connector), cutting these and splicing them into the red/yellow wire means it now works with the sidelights.

Dbo · Post by **Dbo** » Fri Jul 11, 2014 3:00 pm

Cheers m8... will give it a go.....

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Fri Jul 11, 2014 3:22 pm

Well done - I hadn't got to the bottom of this on Lisa's either!

Post by **Vtecmec** » Fri Jul 11, 2014 3:33 pm

Yeah, easier than I thought, if you want this as a brake light, splice the wires into the green/white wire on the same connector instead of the red/yellow.

mart609 · Post by **mart609** » Sat Jul 12, 2014 1:31 pm

I retro fitted mine. I did a write-up
Can't remember how now though.
Pretty sure I just spliced into the rear sidelights.

Dbo · Post by **Dbo** » Sat Jul 12, 2014 3:09 pm

Just done mine... at last all working

need some ultra bright blue 501 bulbs as tint is too dark to see it....