“My diagram is indeed a "generic" smoke unit reference, hard to make one for every specific smoke unit. 
The fan runs off a regulator, and even though you drop the voltage on the smoke unit, it won't change the fan speed. However, you still get the lower smoke at idle effect as it lowers the heat in the smoke resistor and you get less smoke. You may have to "tune" the number of diodes to get the desired effect, sometimes I have too many and I don't get any visible smoke at idle.”
That’s what I thought but I just wanted to make sure. I have a Turbo Smoke unit that has the decel feature but it’s bigger and space is getting tight.
“I think some of the E6 units may have had a single reverse light, but I'm pretty sure I never saw markers on them.“
I searched the internet, (for longer than I care to admit), for a pic or video of the rear of an E-6. Unfortunately, only a few capture the rear end. Not enough imagery to clearly see if there is indeed a rear light on the back of the A units. Maybe someone else can chime in?
“If you're using bi-color LED's, how are you driving them? Note that they have to be common anode if you're triggering on the forward/reverse light outputs. Also, you need to add the .01uf caps across the lighting outputs, and if you have series diodes for the smoke, you need the .01uf cap across the smoke output of it'll stop altogether.”
I was going to drive them off of the front and rear lighting outputs of the R2LC. I haven’t decided if I’m going to use resistors or the LEDCCLR. Obviously, I’d have to use 2 LEDCCLR’s then. One for each circuit of the R2LC which I think will be a waste. They are common anode LED’s. I already added the caps across the lighting outputs. Good to know about the cap for the smoke output. I’m planning of following your wiring diagram you provided previously for directional lighting.
Thanks again for you help!
