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Very nice. Not sure I actually used a 250K that might have been a typo could have used a 220KΩ. 250K is not a common resistor. Either way I know this mod works long term I have it in 3 cars now no issues. The blink rate is just right unlike every single LED flasher I've tried and the first blink delay is extremely annoying.
edit - almost forgot to say I'm using an SMD resistor now put it in place of the SMD capacitor near pin 10. I've also tried it with the SMD resistor soldered on top of the capacitor. Technically the cap should be there but without have not had any problems. So the mod is actually easy and clean cut one trace solder down the SMD component and done. Can barely tell the board is modified.
Very nice. Not sure I actually used a 250K that might have been a typo could have used a 220KΩ. 250K is not a common resistor. Either way I know this mod works long term I have it in 3 cars now no issues. The blink rate is just right unlike every single LED flasher I've tried and the first blink delay is extremely annoying.
edit - almost forgot to say I'm using an SMD resistor now put it in place of the SMD capacitor near pin 10. I've also tried it with the SMD resistor soldered on top of the capacitor. Technically the cap should be there but without have not had any problems. So the mod is actually easy and clean cut one trace solder down the SMD component and done. Can barely tell the board is modified.
Oh yes, I was thinking the same thing, a SMD resistor will be perfect stealth mod hehe, in my case I could even put it right across pin 10
Indeed 250k isn't a standard value, 220k, 270k are far more common.
Hey LeX2K. I recently ran into an issue regarding my 92' SC300 blinker relay setup. I've owned my SC for a year now, and up until a few months back I had perfectly functioning blinkers and hazards. A few months back my left blinker completely went out, no dash light nothing, than after doing some recent work to the car, my right is completely out. After finding this article and looking at my relay, I found someone in the past had done a custom duale relay setup. Sadly with it being a daily, but also a drift car, it looked like plugs had been yanked and all the routing of wires were jumbled around from drifting, and the relays dangling at my feet. Bellow are the pics of the wires and relays that had been used. I am reaching out to see if you could help me figure out how things were routed and connected, so I can fix my blinkers as it is a street car/daily.
I'm reposting this here since there wasn't a pinout specifically listed for the prototype adapter harness that LeX2K made to connect the Toyota Camry Gen5 flasher relay to the 1992-1994 Lexus SC300/400 & 1991-1994 Toyota Soarer fuse/relay kick panel as a replacement for its discontinued twin relay within relay signal flasher module.
The standard Bosch 5-pole automotive relay has exactly the same spade layout and spacing... only Toyota/Lexus totally repurposes those spades in their own way for their relay. This is why you cannot just plug in a standard 5-pin automotive relay and expect it to work. You just want to gut a 5-pin Bosch style relay and use it and its spades as the other end of your adapter harness.
LeX2K used a Ford OEM automotive relay (from a Ford truck he said previously) since it was easy to gut inside and get to just the pins. His wire covering is standard stuff that you can get at any universal wiring supply source.
If you consult each pinout in the following diagrams...
Ford 5-pole automotive relay plug side (I turned the image orientation sideways so as to better line up with Toyota's own matching diagram of pin arrangement):
Lexus SC300/400 & Toyota Soarer footwell kick panel receptacle (carefully note the specific orientation of the pins that Toyota has made):
90980-10799 Connector for the Toyota Camry Gen5 flasher/signal relay (plug side that faces the Gen5 relay):
....from consulting those and testing with my multimeter's continuity setting I came up with following table following each pin of LeX2K's prototype adapter harness:
Connector 90980-10799 Pinout to prototype 5-pin relay style connector (for 1992-1994 Lexus SC300/400 & 1991-1994 Toyota Soarer to use a Toyota Camry Generation 5 signal flasher 81988-50030 relay modified for LED bulbs):
Pin 1 — “Pin 2” in the SC fuse panel receptacle aka “Pole 86” on the 5-pin style relay male spade
Pin 2 — “Pin 4” in the SC fuse panel receptacle aka “Pole 87A” on the 5-pin style relay male spade
Pin 3 — “Pin 5” in the SC fuse panel receptacle aka “Pole 87” on the 5-pin style relay male spade
Pin 4 — “Pin 2” in the SC fuse panel receptacle aka “Pole 86” on the 5-pin style relay male spade
Pin 5 — “Pin 1” in the SC fuse panel receptacle aka “Pole 85” on the 5-pin style relay male spade
Pin 6 — “Pin 3” in the SC fuse panel receptacle aka “Pole 30” on the 5-pin style relay male spade
Pin 7 — External wire to chassis ground
Pin 8 — UNUSED / NO CONTINUITY
The 90980-10799 connector uses OEM Toyota repair terminal wire P/N 82998-12340.
....
LeX2K if anything looks off in my findings please correct me!
03-14-22, 10:59 AM
