It will be a single tan wire with a black stripe that breaks out of the wireing harness
over by the relay box on the passanger side of the firewall.
Some trucks do not have this plug/wire. Timing on these trucks can be adjusted without unpluging anything.
trying to set base timing on a 97 Chevy c1500 with a 5.7 engine the wire to disconnect to set base timing is ?
It will be a tan wire with a black stripe that breaks out of the wireing harness on the fire wall but close to the dist.
Disconnect the cable at the battery. Trace the wire to the other end, looking at how it is routed. Disconnect the wire and pull out. Put the new wire in, routing in the same manner. Connect the cable ends back up.
There should be a single wire hanging below the glove box. disconnect to time. dont forget to reconnect
1986 should be carburatored and it is not required. That would only apply to a fuel injected engine.
The wire that needs to be disconnected is located under the glove box, if I remember correctly it's orange in color. It will be tucked along the channel where the hinge screws are.
The wire in question is not called a reset but a "Bypass Wire" . It is a single wire with a quick disconnect found right next to the main harness entering the computer module . The bypass wire is used when setting the base ignition timing to 0* . You will not be able to properly set timing with the control wire connected .
hei ignition or edi ignition
There should be a sticker on the fan shroud telling you which wire to disconnect. On the older tbi motors it was tan with a black stripe i believe. Disconnect this wire, the loosen the dist. bolt and check the timing with a timing gun. Rotate the dist. until you get the desired timing then tighten the dist. bolt and connect the tan wire. On a vortec engine you have to have a engine scanner to adjust the timing. But if there is no check engine light on then the timing is correct all ready. It is controled by the computor, There is no ajustment needed.
First place there is no need to set the timing if the distributor has not been moved. And there is no wire to unhook.The ignition timing is controled by the ECM / engine control module. If the timing is off you will have a check engine light on. If the light is not on, then the timing is correct. No need to bother, The computer is taking care of it.You have to have a OBD II engine scanner to set the timing.
AnswerMost of the time, the steps to take to set the timing are on the catalyst sticker under the hood. But first, you must get the vehicle into base timing (usually disconnect a wire from distributor). Remove distributor hold down bolt, hook up timing light to #1 spark plug wire, start engine, and align timing mark (0°) Once this is set, reconnect the wire you had to disconnect for base timing. Timing advance will automatically set itself. if it doesn't, you have a faulty timing advance mechanism on the distributor. You can check timing advance by pointing the timing light at scale (while hooked up to #1 spark plug wire) and rev the motor. Timing marks should move up the scale.On many GM cars and trucks the wire that you disconnect is solid gray in color, it is in the wiring harness on the firewall, the wire has a black plug for separating when doing the timing.
dark green