Tach wire, which one is it?
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From: Evansville,IN,USA
Car: 89' T/A, 00' Firehawk
Engine: 406 Roller
Transmission: TH700R4 w/2800 stall
Axle/Gears: 3.23 Posi
Tach wire, which one is it?
I did my engine swap and I am needing to hook up the tach. Does anyone know which wire it is when it comes out of the firewall under the brake booster. I had a aftermarket tach in before and I ran it off a MSD box. I don't have either of those now and am I going back to the stock tach. Probem is I don't know which wire it uses. Thanks. I have done a search on here and looked in my Haynes manual but haven't had any luck so far.
Thanks.
Jason
Thanks.
Jason
Thread Starter
Supreme Member
iTrader: (5)
Joined: Jan 2001
Posts: 2,025
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From: Evansville,IN,USA
Car: 89' T/A, 00' Firehawk
Engine: 406 Roller
Transmission: TH700R4 w/2800 stall
Axle/Gears: 3.23 Posi
Re: Tach wire, which one is it?
I think it's the white one, shown on this picture. This is exactly what I was looking for.
http://www.austinthirdgen.org/mkport..._1989_C100.gif
I will post back if it works or not.
http://www.austinthirdgen.org/mkport..._1989_C100.gif
I will post back if it works or not.
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
White is what I was going to say. Your chart backs that up.
Most aftermarket tachometers use a green wire for the signal, but that doesn't mean the factory did.
Most aftermarket tachometers use a green wire for the signal, but that doesn't mean the factory did.
oh ok my bad 
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