Ignition coil wires- which do what?
02-19-2007, 07:40 PM
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Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
Ignition coil wires- which do what?
I'm wiring up a new ignition and I'm trying to double check what each wire does to prevent any problems. Can someone explain what each wire is on the coil in this diagram from my Chilton manual?
02-19-2007, 08:24 PM
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Car: 88 Firebird - SOLD!
Engine: 2.8L
If my feeble mind serves me right.
Pink from ign switch = +12v
Pink & White = pickup coil trigger wires
Black = Ground
Corky
Pink from ign switch = +12v
Pink & White = pickup coil trigger wires
Black = Ground
Corky
02-21-2007, 01:09 AM
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Car: 1988 Camaro IROC LB9 F
Engine: 305 HO EFI
Transmission: TH700R4
Axle/Gears: GU5 LS 3.23
white is trigger from the EST(fires coil)
white is also tacho feed
pink is 12vdc from ignition swtich (run), powers coil and EST
By your diagram this means that the pink wire from the EST should go where the white (inst-tacho) is shown and the white (inst-tacho) goes where it shows the pink wire ie; common with the white trigger wire.
I checked both my factory manual, a Haynes and the Chilton (28282)..the Chilton does not agree with the other two, looks wrong. Actually the AB input to the EST is for A=ignition power 12vdc, B is trigger for coil and switches to earth/Gnd to fire coil. The Chilton has AB inputs shorted, can't be right?
Be careful.
Last edited by Siggy; 02-21-2007 at 01:36 AM.
02-21-2007, 01:31 PM
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