infotechplus
24-03-2008, 07:57 AM
In this episode I am going to install an FET TB-308 fully automatic Turbo Timer in my Aristo. It's a 1996 Series 2. Whilst not all Turbo Timers have the same wires and functions this will still be a useable "How To" for anyone with an Aristo.
This Turbo Timer has been around for at least 10 years and there is very little information on it around the web but after some persistent searching I found that it was using the following wires:
FET TB-308
Red - Battery (constant 12V)
Yellow - Ignition 1 (Key is in ON position)
Blue - Ignition 2 (Key is in ACC position)
Black - Gnd
White - Handbrake
To wire it up correctly I used the following from the ignition harness
Black/Red wire - Constant 12V (Red on TB308)
Black/Yellow wire - Ignition 1 (Yellow on TB308)
Brown/White wire - Ignition 2 (Blue on TB308)
Plus
White wire on TB308 to Green/White wire on the handbrake switch
Black wire on TB308 to Earth
I found using the Blue/Red wire on the Ignition switch, whilst it is ON when you turn the key to ACC, didn't allow the engine to stay on when you turned the ignition off (even though it had 12V + like the Brown/White wire).
PS. There are two Brown/White wires on the Ignition switch. You want the wire at the back near the blue wires.
I've driven with this Turbo Timer installed for a couple of days, and I have it set to the automatic position (Mode 2) where it adjusts the time according to how you drive.
Here's how it works:
The power button turns the unit on/off
The set button changes between the 3 modes.
The first and second modes are both auto where in the first mode the idle time rises at a much quicker rate than the second mode depending on how the car is driven.
The third mode i never use (manual set), but if you hold the set button when you're on "auto2" you'll be able to change the idle time on the third mode in increments of 50 secs.
Tools needed
Long handle screwdriver
Sidecutters
Stanley knife
Electrical tape
Soldering iron
Turbo Timer harness (I made up my own)
Convoluted or spiral tubing
Electric light (to illuminate under the dash)
Time Required:
About 1 - 2 hours depending on how proficient you are with a soldering iron
DON"T FORGET TO REMOVE THE BATTERY CABLES
In the next post we'll get started
Cheers,
Peter
This Turbo Timer has been around for at least 10 years and there is very little information on it around the web but after some persistent searching I found that it was using the following wires:
FET TB-308
Red - Battery (constant 12V)
Yellow - Ignition 1 (Key is in ON position)
Blue - Ignition 2 (Key is in ACC position)
Black - Gnd
White - Handbrake
To wire it up correctly I used the following from the ignition harness
Black/Red wire - Constant 12V (Red on TB308)
Black/Yellow wire - Ignition 1 (Yellow on TB308)
Brown/White wire - Ignition 2 (Blue on TB308)
Plus
White wire on TB308 to Green/White wire on the handbrake switch
Black wire on TB308 to Earth
I found using the Blue/Red wire on the Ignition switch, whilst it is ON when you turn the key to ACC, didn't allow the engine to stay on when you turned the ignition off (even though it had 12V + like the Brown/White wire).
PS. There are two Brown/White wires on the Ignition switch. You want the wire at the back near the blue wires.
I've driven with this Turbo Timer installed for a couple of days, and I have it set to the automatic position (Mode 2) where it adjusts the time according to how you drive.
Here's how it works:
The power button turns the unit on/off
The set button changes between the 3 modes.
The first and second modes are both auto where in the first mode the idle time rises at a much quicker rate than the second mode depending on how the car is driven.
The third mode i never use (manual set), but if you hold the set button when you're on "auto2" you'll be able to change the idle time on the third mode in increments of 50 secs.
Tools needed
Long handle screwdriver
Sidecutters
Stanley knife
Electrical tape
Soldering iron
Turbo Timer harness (I made up my own)
Convoluted or spiral tubing
Electric light (to illuminate under the dash)
Time Required:
About 1 - 2 hours depending on how proficient you are with a soldering iron
DON"T FORGET TO REMOVE THE BATTERY CABLES
In the next post we'll get started
Cheers,
Peter