frodin1

Obviously, there's issues hooking up the dimmer feature on new head units, and Toyota's, since that's all I found searching. I have a ground wire and a hot dimmer wire on the 3rd gen. harness, and only 1 lead on the new HU. Should I just leave this thing disconnected to avoid any issues? I read these things are wired bass ackwards on our rigs. All I have is the diagram they gave me with the new Head unit. No actual schematic to speak of? Advice?

__________________
Pioneer HU, Audiobahn 10.100watt Sub, Sirius, Cobra NWWXST CB W/ K40, Wolo Air horn, K&N FIPK,Tokico Trekmasters,Tundra TRDs, Revtec spacers w/extended studs,Energy bushings on steering rack /front swaybar,SS front diff. drop kit w/skid plate mod,OME 890 Rears with OEM LC Tokicos,Ebrake ext. bracket, BFG AT/KO's, ProComp 1078 Alloys, Magnaflow SS muffler, Hayden 1678 Tranny Cooler, 85watt Amber fogs, 7 Way R/V plugin.

Elton

i just used a harness that plugs into the factory wiring been working find

__________________
My Truck 98 4runner SR5 3.4L 5spd 4x4 E-Locker Mods
Mom 07 Tundra d-cab limited 5.7L 4x4 auto
mom 92 pickup SR5 X-cab 3.0L 5spd 4x4
Papa 89 Pickup SR5 X-cab 4x4 3.0L 5spd/98 4runner SR5 4x4 auto 3.4L
R.I.P 91 4runner SR5 4x4 3.0L 5spd Totaled 5/13/06 My Wreck

frodin1

That's what I have. But that harness has 2 wires for the dimmer and the Pioneer only has 1 comming out?

__________________
Pioneer HU, Audiobahn 10.100watt Sub, Sirius, Cobra NWWXST CB W/ K40, Wolo Air horn, K&N FIPK,Tokico Trekmasters,Tundra TRDs, Revtec spacers w/extended studs,Energy bushings on steering rack /front swaybar,SS front diff. drop kit w/skid plate mod,OME 890 Rears with OEM LC Tokicos,Ebrake ext. bracket, BFG AT/KO's, ProComp 1078 Alloys, Magnaflow SS muffler, Hayden 1678 Tranny Cooler, 85watt Amber fogs, 7 Way R/V plugin.

4Crawler

The main issue you run into is the stock Toyota dimming lights are set up with a floating ground. That is all the lights are powered from a common source then the "grounds" are all tied together and then run through the dimmer to finally hit ground. If you connect in a device that is grounded to the chassis (common with 1-wire lighting setups) then you find the device runs in parallel to the dimming lights and that makes it dim opposite to the rest of the lights. But if the dimmer input is just a voltage level sense , then it is probably OK to connect the hot dimmer wire from the vehicle to the dimmer input of the radio. Or just tie it to a 12 volt power line to keep it constantly dimmed.

__________________
1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs.
r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad
Gettin'Off 4WD Club