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I'm trying to find my blinker relay on my 92 sc300. I've looked at multiple right ups and checked online but my car fuse box layout looks different from other cars for some reason. Can someone point out which one it is or if it's at a different location for my car.
The photo shows a different relay than the one needed. It's a 4 pin relay. Actually all of the black relays are 4 pin with a specific base. I removed all 3 of them.
The flasher relay on my 92 5sp is located on the upper right near the firewall pass through. You have to remove the whole fuse block to get at it. The fuse I believe is red, don't know for sure, I didn't attempt to remove the fuse block. Couldn't move the carpet pass my 3 pedals enough to work on it.
The photo shows a different relay than the one needed. It's a 4 pin relay. Actually all of the black relays are 4 pin with a specific base. I removed all 3 of them.
The flasher relay on my 92 5sp is located on the upper right near the firewall pass through. You have to remove the whole fuse block to get at it. The fuse I believe is red, don't know for sure, I didn't attempt to remove the fuse block. Couldn't move the carpet pass my 3 pedals enough to work on it.
bmatsu, are you looking for the turn signal flasher relay on your 1992 SC300 5-speed? You DO NOT have to remove the whole fuse block to get to it. What you have to do is peel back the carpet a bit near the driver's side fuse and relay block. It will be slightly obscured. There is also a retaining catch on one side of that relay which you will need to gently move slightly in order to allow the flasher relay to be removed from the fuse/relay block.
In the OP's post from 2018 you can just barely see the 92-94 turn signal flasher relay as the beige colored object in the very top right corner of the image.
1992-1994 SC300's and SC400's (and 1991 to around 1994 Z30 Soarers) use a very unique twin-relay-within-main-relay-casing design. They are unique to the model and are shared by no other Toyota or Lexus. For 1995-2000 all of these cars including the Soarers went to a much more conventional signal flasher relay design. They were built the way they were to actually last longer and preserve all the plug contact points in the circuit with the high current load that goes through them-- a byproduct of 1980's and early 1990's Toyota over-engineering philosophy.
For 1992-1994 models if there is any malfunction with the relay it is highly recommended that you get it professionally serviced with brand new OEM original supplier replacement capacitors and possibly the same for *some* internal resistors. The reason being is that these can usually be repaired to normal function again and... they are not made any longer. Finding another good working used one (or another one to repair for re-use) would be a secondary option.
However I strongly recommend that you keep your original 92-94 SC300/400 flasher relay since they are no longer made, aren't easy to find and can usually be resurrected to full working condition again.
For 1995-2000 model years SC300/400's the turn signal flasher design should be in the same physical location but the design but it is a much more conventional relay and is easy to source a new OEM replacement for.
^^ Excellent explanation. Since I did that project it became clear that the original relay is almost always repairable via capacitor replacement. So my hack job is not really necessary but it worked out for me because now I'm using the modified design in all my cars since it is much better than the LED compatible made in China relays.
^^ LeX2K I would NOT ever call your alternative relay design a "hack job"! You did some amazing work with that and came up with an alternative that allows for LED bulbs to be used (assuming high quality LED bulbs are used) in a 92-94 SC (or early Z30 Soarer)... and apparently other Toyota/Lexus cars! I never would have considered the Generation 5 Camry OEM flasher relay could be modified to suit the application even after we discovered that the pins from a gutted Bosch-style 5-pin relay would fit but still needed to be wired up very differently.
Your investigation also revealed that these ultra-specific 94-94 factory SC relays are actually repairable, yes. Oddball design but apparently their over-designed nature gave us that as a bonus?
^^ LeX2K I would NOT ever call your alternative relay design a "hack job"!
Thanks but it's a hack. A good one because I'm fairly good at this type of thing but still a hack! I sorta forgot I did this https://i.imgur.com/82UHAe1.jpg
Made the gen5 flasher work in place of a 3-pin but what a mess haha. I now rewire the signal stalk a bit to use the gen5 unit much more elegant.
02-17-18, 03:18 PM
1992 sc300 blinker relay location???
