Is there a wire to unplug before setting the timing

Its on the dist. on chev's it the brown wire and you can just unplug it along with the other wire on the harness.

Spark plugs are set at 0.035 inch.
Ignition timing is set at 0 degrees BTDC. The computer then controls the timing from there. There will be a wire that you unplug before you set the timing, then once you have verified that the timing is at 0 degrees, then reconnect the wire and you're done.

ok ran great before changes. right. you say unpluged computor to set timing.. yes.. do you mean the plug on the firewall passenger side that looks like a fuse holder kindof..?? (set timing connector ) (tan /blk wire)
did it run good during timing proceedure??? wont be MAP that is engine vacume has nothing to do with what you have replaced.
proceedure is to set timing . shut off engine , plug in.. then restart.
yes timing moves as per ECM specs. check that timing did no get out one tooth when you replaced distributor. retime . restart

Not sure if the 95 is the same as the 93. On the '93 there is a timing advance wire you have to unplug (brown wire near the distributor on the firewall with a plug connector.) Start it up with the wire unplugged and set timing to 0 degrees BTDC. Turn off engine. Plug wire back in and computer takes over. There should be a sticker on the radiator shroud that gives timing and spark gap settings.

The timing is to be set at zero TDC.The connector is on the passengers side under the hood against the fire wall.There might be a plastic cover over it.It is a tan wire with a black stripe.Sometimes it will be in the passengers side under the dash.by the blower motor.Same colors on the wire.The check engine light will come on when the connector is unplugged but it will go off after it is plugged back in and the key is cycled on then back on or start.Hope this helps.Good luck.

begin with the #1 piston at top dead center on the compression stroke. Position your distributor and rotor to match up to the #1 plug wire. If you look under the glove box under the carpet there is a single wire with a disconnect in it. Unplug it from itself. If you do not unplug this wire it will burn valves, piston tops and never time correctly. With this wire unplugged time is just like a normal vehicle. Just remember to turn the engine off replug the wire and then let it idle for a few minutes. Turn the engine off, restart it and then you should be good to go. Cranking it and letting it idle gives the computer time to reset itself.

start engine and bring to normal operating temp. unplug the base timing connector located in the distributor wiring harness tan wire with a black stripe use a timing light and set timing to 0 degrees at idle the timing marks are on the crankshaft pulley and a tab on the timing cover with numerical indications

Is this tbi? I'll have to look it up but it should be set at zero degrees with the timing connector unplugged, I think. The timing connector is under the plastic relay cover on the passenger side firewall. It is a single wire plug that the wire is tan with a black tracer. With this unplugged you set the timing mark to the large gap on the timing tab.

The SPOUT connector is used to set the base ignition timing. You unplug the spout, set the base timing to specs, then plug it in. It doesn't affect the plugs or wires.

unplug the relay it should have a black and a tan set of wires, it could be on the fire wall or by te distributor, mark your timing marks on the vibration damperand the timing cover your correct timing setting should be on a sticker under the hood. hook up your timing lite to # 1 cylinder and adjust away. if you need more info let me know.