SeanC
12-25-2010, 06:45 PM
Hey guys,
I just got a new Harlan engineering shift light for christmas. I've never done any wiring before (other than some basic replacing of some broken sensors, etc.), and would really appreciate a little guidance. The instructions are pretty straigh forward, but I would feel a lot better with a little help!
The shift light has a Red, black, and green wire coming out of it.
Red wire - Connect this wire to a +12V source. The fuse block is a good choice for this connection, a switch accessory fuse is a prime choice.
Black wire - Ground connection - choose a convenient ground location. A mounting screw or any other metal piece that makes a direct connection to the body will do. The radio ground is also a possibility.
Green wire - This is the tach input for the module. This can be either from the Tach line of the engine computer or from the switched side of an ignition coil
What is the best way to go about finding a fused accesory for the power, and whats the best way to get the wires through (i'm mounting the shift light in the left defroster vent)? Also, there are no instructions on what part of the LT1 PCM is the tach signal. If I don't use the computer, where on the coil is the "switched side"?
Sorry for all of the newbie questions...i'm just not very confident with wiring yet. Theres only one way to learn :nod:
Thanks for the help, I really appreciate it!
I just got a new Harlan engineering shift light for christmas. I've never done any wiring before (other than some basic replacing of some broken sensors, etc.), and would really appreciate a little guidance. The instructions are pretty straigh forward, but I would feel a lot better with a little help!
The shift light has a Red, black, and green wire coming out of it.
Red wire - Connect this wire to a +12V source. The fuse block is a good choice for this connection, a switch accessory fuse is a prime choice.
Black wire - Ground connection - choose a convenient ground location. A mounting screw or any other metal piece that makes a direct connection to the body will do. The radio ground is also a possibility.
Green wire - This is the tach input for the module. This can be either from the Tach line of the engine computer or from the switched side of an ignition coil
What is the best way to go about finding a fused accesory for the power, and whats the best way to get the wires through (i'm mounting the shift light in the left defroster vent)? Also, there are no instructions on what part of the LT1 PCM is the tach signal. If I don't use the computer, where on the coil is the "switched side"?
Sorry for all of the newbie questions...i'm just not very confident with wiring yet. Theres only one way to learn :nod:
Thanks for the help, I really appreciate it!