[shooter6926]

I know I need to install a little chips for my speedometer to read correctly, but I have been told that I need to find out what color. Does anyone know what color/where to get this chip? And is it expensive? (89 Mustang)

[OzPony]

'89 Mustang requires a new speedo gear to correct the speedometer. You can buy them from Steeda. The color depends on whether you are auto or manual. Double check the guide on the website but it looks like it will be a Black or Orange one.

Manual Transmissions with 7 Tooth Drive Gear - 1983-1989 T-5 OEM
- 3.55 Gear Ratio / Black 20 Speedo Gear $9.95

Automatic Transmissions with 7 Tooth Drive Gear - 1983-1989 Automatic Transmissions
- 3.55 Gear Ratio / Orange 20 Speedo Gear $9.95

[DaleD]

Don't know if I'm doin this right or if I should post a new speedo question as reply. But bare w/ me, I'm new as of today.

I have somewhat the same question. Here's a short history: 1988 mustang GT T-Top, 16" wheels, 3:55 rear end, Stock Tran - manual 5, 85mph speedom, 20tooth speedo gear. I don't remember if I see 7 or 8 tooth gear in Tran. Never have found the right speedo gear. It's alway been off 5 to 10 mph.

Now I'm installing a 1993 (I think 93) 140mph speedom & new speedocable. I just read not to use a post 1989 140 speedom in a pre 90's. What I've done so far is pulled both clusters apart, swaped 140mph face sticker to 88's 85mph mounting plate, 140 speedom to 88's mounting plate cause 93's mounting wouldn't fit 88. Any Ideas what speedo gear I should go to? Or how to get speedom calibrated?

I'm too old to be getting tickets by accident.

P.S. my 20 tooth speedo gear is white.

DaleD