turn signal/brake light problem

I am wiring my 41 Ford pickup and have the turn signals working on a DPDT toggle switch. When I attach the brake wire (single in line pedal switch)the blinker stops. I assume I can use a couple of diodes to integrate the brake lights but do not know what value I need. I have no idea how to connect the 4 way flasher.I have looked at some of the circuits on this site and cannot believe two relays are required for each side of the vehicle. I have working flashers and simply want to integrate the 4 way flasher and hook up the brake lights. Any help will be appreciated.

first i want to ask....why not use a regular turn signal switch?

where are you located?

yuk

quiet rural missouri, near KC.

If your system moves you physically and not emotionally, you have wasted your money.

I assume you have a single filament that acts as stop and indicator/flasher? That required the same circuit as older vehicles elsewhere that combined indicator/reverse lights. One DPDT relay is required per side. Stop is through the NC contact (87a) to the filament (30). The turn signal switch energises the relay and connects the filament to the flasher can (87). The other pole connects the front flashers to the can (30 & 87). The flasher should override the stop. Diodes will still keep the filament on if stop is on, and the can probably won't work anyhow since it has to feed power to the filament(s) to work.

Thanks for your response. I am in North Carolina. The reason I am not using a traditional TS switch is because there is no provision for one on the smooth steering column.

In some ways that's better. Unlike "normal" indicators where +12V goes to the flasher can and then thru the left-right switch to the respective front & rear filaments, for the combined brake/flasher or reverse/flasher filament, +12V goes direct to the switch whose L or R output energises the respective L or R relay which connects the can to the filaments (ie, rear via the SPDT contacts, and front via the SPST contacts (the 2nd set of contacts in a DPDT relay with no 87a connection).

many many years ago......i helped a guy with a 48 chevy truck do about the same thing.

instead of trying to create a bunch of wiring, we just made a plate to mount a regular turn sigal switch on and mounted inside the dash at the drivers side end. we shortned the stalk so it didnt protrude too far and positioned it in a manner that the emergency flasher was near the bottom of the dash and easily accessable.

the only functional difference from being in the column was he had to turn them off when he was done turning.

it worked perfect.

he ended up sticking a flasher in it that played the song  "love me tender" when it was on to remind him to turn it back off.

yuk

quiet rural missouri, near KC.

If your system moves you physically and not emotionally, you have wasted your money.