[Fot] Technical Question

[Bill Tobin]

Metal oxide semiconductor field effect transistor I think. That's about 
all I know about MOSFETs!

Cheers Bill

On 2/12/2020 6:20 PM, Barr, Scott via Fot wrote:
> I understood 31% of the words in Bill's post.  Isn't The MOSFETS a Moroccan street gang?
>
>
> -----Original Message-----
> From: Fot <fot-bounces at autox.team.net> On Behalf Of John H. Hasty via Fot
> Sent: Wednesday, February 12, 2020 5:15 PM
> To: Ponostyle <ponobill at gmail.com>
> Cc: Fot <fot at autox.team.net>
> Subject: Re: [Fot] Technical Question
>
> Good Lord... this tail lite thing is out of control!
>
> Sent from my iPhone
>
>> On Feb 12, 2020, at 6:11 PM, Ponostyle via Fot <fot at autox.team.net> wrote:
>>
>> Anytime the surf sucks in Maui I’ve been working on control systems for the electrical stuff in the 1978 GMC moho I’m updating. One component is a wireless brake/turn/tail/backup light using an ESP32.  The turn signals are sequential. Seeing sequential turn signals in a little Lucas taillight would freak people out. If you weren’t going to do all the wacky wireless stuff it would be easy to combine features with an Arduino and a few MOSFETS, or better yet a mosfet board that includes opto couplers. The code is pretty simple, though my current version is written for using MQQT via wireless—for any geeks out there.
>>
>>> On Feb 12, 2020, at 10:09 AM, Randall via Fot <fot at autox.team.net> wrote:
>>>
>>> I have my street TR3 wired that way; so the corner lamps do triple
>>> duty as tail, stop and turn.
>>>
>>> You can buy a solid state device to do the conversion (commonly sold
>>> to connect a "3 wire" trailer to a car that has separate turn and stop lights).
>>> However, I did mine with relays.  Initial conversion was done with
>>> only two relays, but then when I started converting to LED lamps, I
>>> re-did it with 3 relays.  Here's a brief schematic
>>> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fi.i
>>> mgur.com%2FWWBJhUE.jpg&data=02%7C01%7Csbarr%40mccarty-law.com%7Ca
>>> 02ecb1255364e7b637e08d7b0116973%7C5027ac9b577b4efca8a99ee22eb53484%7C
>>> 0%7C0%7C637171461142229208&sdata=ApW6F73vWaN9SYlQjCjiN6SZ8lmg%2Fq
>>> TfwPhBzwzHhhY%3D&reserved=0
>>>
>>> FWIW, this was done with no permanent modifications to the car or the
>>> original wiring harness.  The relays are mounted under the dash, out
>>> of sight, on the back of one of the bolts that holds the brake pedal
>>> pocket together.  A new sub-harness runs from there up to the area
>>> where the control head wires join the main harness, plus one wire to
>>> the brake light switch.  (Which in my case is still under the dash,
>>> as I converted to a mechanically operated switch instead of the
>>> original hydraulic one.)
>>>
>>> The relays are just cheap automotive relays; couple buck each on flea-bay.
>>> (ISTR I bought 10 of them, with sockets, for $20 with shipping.  But
>>> I've decided I don't like the sockets, so I just use quick connects
>>> to wire to the relays.)
>>>
>>> -- Randall
>>> 56 TR3 TS13571L once and future daily driver
>>> 71 Stag LE1473 - awaiting engine rebuild
>>> 71-2-3 Stag - awaiting gearbox rebuild
>>>
>>>> -----Original Message-----
>>>> From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of Jack
>>>> Wheeler via Fot
>>>> Has anyone with a street TR-2 or early TR-3 rewired the brake light
>>>> so the outer lamp fixtures (tail lights) come on when the brake
>>>> pedal is depressed?
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