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Chevy turn signal switch wiring diagram12/6/2023 ![]() ![]() Between me and a couple friends we are always looking to run the "OLD" style 3 wire switch but have only the 2 filament rear light bulbs. I've seen where they do this with diodes and was under the impression all the cheapy ones worked the same way, but I don't know if that's really accurate or not. I realize this is a pretty limited scenario not applying to most.Ĭan you tell me how the $20 unit worked - in terms of brake light intensity? Was it like I described or was it a BETTER mouse trap. My other issue (probably not applicable to alot of people) is that this will be set up for my '47 Ford truck that I want to tow with - by using a relay there is no funky issues with hooking up extra lights from the trailer. but!!!!!! Since I've been nearly rear ended in my old cars already I was hesitant to make the STOP lights any LESS BRIGHT. In lots of ways it was a CHEAP and ELEGANT fix. I've looked at a few of those style units, but my "problem" with them was that they DULLED the STOP LIGHTS for normal use and then allowed full current (brightening them) for Turn Signal contrast. Yellow wire from the turn signal flasher. Wires vary from model to model, so it would help to know WHICH 1963 Chevy, but try this: Tan horn. Chevy Turn Signal Bushing & Rubber Pads 6. By doign it this way when you step on the brake pedal BOTH STOP LIGHTS light up but when you turn your Turn Signal on you FLASH that side STOP LIGHT as your Turn Signal. Chevy wiring diagrams are available here. Turn Signal Switch Orientations Left Turn Signal Wiring Diagram Light Blue (Left Front. If you look at the schematic you will see that Normally the brake switch will light BOTH STOP LIGHT bulbs, but they both get power through a set of normally closed contacts via a dedicated relay. A little overkill I admit, but I figure it'll work just fine. I was bound and determined to run an OLD 3 wire turn signal switch and came up with this setup to do it. You can also easily add a 4 way flasher switch by simply activating BOTH relays at the same time or bypass them altogether and run an actual 4 way switch. There is an aftermarket "adapter" that works but all teh ones I have seen DIM your stop light bulbs and frankly that scares me - so I added a couple of relays to do the job where you get full power to the bulbs for Stop Light. The easiest way to run this is getting the 7 wire Turn Signal switch, but there are ways to have a OLD 3 wire Turn Signal switch work as well. So you run a Right Stop Wire (will also double as your Right Turn Signal) and a Left Stop Wire (will double as your Left Turn Signal) and lastly a wire for your Parking lights - no need to run two there but I guess you could if you wanted. The idea is that you set up your STOP lights with TWO wires (each with it's own dedicated wire) so that you can use the Bright filament for BOTH stopping and for turnsignals. In a nutshell all you do is add a scond wire going back the the stop light fcircuit.
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