I have a Astroflex J5F-TX1000 I'm wondering how to activate, cause all it does is blink once when I push the button. command starter

Astrostart Alarm Key Fob Remote Programming Instructions

1. Open you hood. If needed, jump the red/black wire to a good ground.
2. Turn the key on, press and release the brakes.
3. Turn key from on to off 3 times. (OFF - ON - OFF -ON - OFF) The Park lights will blink 4 times. ...
4. Push any button the first remote to be programmed. Repeat for all remotes. ...
5. Turn key on and press brakes once.

Push the ETS button once to activate and once again to turn off. ETC stands for Enhanced Traction System. When the lamp is on the ETS is activated.

Yes you need a Professional to reset the cars Computer and reset your Fob.
Take care all best.
Clive

Just email them regarding any enquiry
https://big-manuals.com

Looks like they are compatible,
http://www.directeddealers.com/manuals/OG/Astrostart/4204a_OG-Eng%5B1%5D.pdf

Get under the dash or where the unit is located.
You will see 8 or 9 dip switches on the unit with an LED beside them.
Turn switch 1 and 8 on.
Press and release the brake. (LED will flash)
Press and hold start button on remote. (LED will flash and parklights will flash once.
Turn switch 1 and 8 to off.
Press and release the brake (LED will flash once)
In future would be a good idea to supply vehicle details etc as can sometimes be a known condition , that saves time looking it up , good luck

You may need to reset the system.

SEQUENCE ACTIVATED BY THE PARKING BRAKE .
1. While engine is running (key in ignition switch), apply the brakes and hold the pedal down.
2. Move gearshift lever to neutral.
3. Apply the parking brake Once Twice
Note: The system can be set - at time of installation - to require that the parking brake be applied once or twice.
If set for two actuations, pause one second between the two.
4. Remove key from ignition (the system keeps the engine running).
5. Exit the vehicle.
6. Within 60 seconds, close all doors.
7. The system will stop the engine and blink the parking brakes once to confirm the sequence is valid (vehicle is
ready for a remote start command).
SEQUENCE ACTIVATED BY THE REMOTE CONTROL
1. While engine is running (key in ignition switch), apply the brakes and hold the pedal down.
2. Move gearshift lever to neutral.
3. Apply parking brake.
4. Send the start command (Model 801 & 2101 - Model 903 ).
5. Remove key from ignition (the system keeps the engine running).
6. Exit the vehicle.
7. Using the remote, send the STOP command. The system will stop the engine and parking lights will blink once
to confirm that the sequence is valid (vehicle is ready for a remote start command).
http://www.astrostart.com/Support/Guides.aspx

STARTER RELAY SWITCH IS BAD IT.S IN THE FUSE BOX UNDER THE HOOD ONCE LIFT THE COVER OFF AND TURN IT OVER IT WILL TELL YOU WHERE IT.S LOCATED AT

Try this one
http://www.astrostart.com/Support/Guides.aspx

you need to reprogram the tach as it may be a little stronger or weeker in your current van