What was the front end harness on a Firebird?
Before 1980, there were five separate pieces to the main wiring harness of a Firebird. Some cars in 1980 and all of them in 1981 used an engine control computer harness in addition to these five. The front end harness includes the horns, wipers, and front lights
Where are the wiring harnesses on a Trans Am?
The add-on wiring harnesses plugged into the middle of the fuse block. The front end harness and engine harnesses snap together to form a square, which plugs through the firewall into the back of the fuse block. The front end wiring is the outboard (driver’s side) half, and the engine wiring is the inboard half of the square.
What was the fuse block on a 1977 Pontiac Trans Am?
This figure shows the interior side. The gang of wires plugged in on the right is the body harness, which feeds the taillights. Pontiac called this connector a “harmonica”. This is a 1977 fuse block, and it is typical of 1970 to 1979.
Where does the wiring go on a Fisher Body Trans Am?
Note that the wiring to the rear body is in a black conduit. This is routed up and into a tray that Fisher called the “cross-body conduit”. This tray spans the width of the firewall and was used by Fisher body to hold power window and door lock wiring.
Is the 1981 harness the same as the 1980 harness?
Although not fully merged, the 1981 computer and instrument panel harnesses connected on 13 circuits, most of which didn’t even exist in the 1980 harness. So, to summarize, the 1980 and 81 harnesses are each totally uniquie.
When did the wiring harness for Trans Ams change?
In 1979, the dimmer switch was moved from the floor to the steering column, so the I.P. harness had to be revised to accommodate it. This was minor compared to what happened next. In 1980, the whole wiring harness was overhauled and the fuse block was changed to blade-type fuses.
What was the spark control harness in 1981?
In 1981, computer engine controls were used on all GM cars. The 1980 spark control computers had used separate harnesses that didn’t connect to anything in the main harness. Although not fully merged, the 1981 computer and instrument panel harnesses connected on 13 circuits, most of which didn’t even exist in the 1980 harness.
Is there a power supply for pulse wipers?
Some omitted the fuse, some had built-in jumpers (as shown below on the power supply to the pulse wipers), and there was a combined cruise control and tach wiring harness with only one power supply. In 1980 the tach wiring was integrated into the standard harness.
Where does the clutch plug go on a Firebird?
On automatics this allows your car to start only in Park or Neutral. On a Firebird with a manual transmission, there is a very short extension of two purple wires that connects to a clutch pedal start switch instead. The extension is shown here with the switch and the plug that it connects to.
Although not fully merged, the 1981 computer and instrument panel harnesses connected on 13 circuits, most of which didn’t even exist in the 1980 harness. So, to summarize, the 1980 and 81 harnesses are each totally uniquie.
What is the color code for engine wiring?
GENERAL WIRING COLOR CODE Color Use Green or green w/yellow stripe(s) DC Grounding Conductors Black or Yellow DC Negative Conductors Red DC Positive Conductors Engine and Accessory Wiring Color Code Colour Item Use Yellow w/red strip (YR) Starting circuit Starting switch to solenoid Brown/yellow stripe (BY) or Yellow (Y) – see note
What is the color code for an ignition switch?
Orange (O) Accessory feed Ammeter to alternator or generator output and accessory fuses or switches Distribution panel to accessory switch Purple (Pu) Ignition Ignition switch to coil and electrical instruments Instrument feed Distribution panel to electric instruments Dark blue Cabin and instrument lights Fuse or switch to lights
When did the GM Trans Am wiring harness change?
In 1980, the whole wiring harness was overhauled and the fuse block was changed to blade-type fuses. Almost everything was changed from 1979; there are too many incompatibilities to list. In 1981, computer engine controls were used on all GM cars.