How to add an aftermarket tach to a Smart Car

[High Side]

I like this tach set up. While the smart is not a racer; it is an opportunity to express individuality. If I had any mechanical talent at all, I would add the pillar pods shown. Too cool!

[pitstopautoinc]

Thanks for the complement, I really appreciate it.

[spunoff]

That's really a KOOL set-up!
Does anybody know how to hook up a 450 tach to a 451? I got one thinking 'I can do this' and found out the 451 only has 3 wires (smart buss) and the 450 has 5 on a connector and a flying lead.
Maybe this wasn't such a 'smart' idea after all.
Help!

[SmartDrive]

Nice work! Good on ya for being unafraid to tear into your smart and put it back together.

[hogdaddy]

Originally Posted by babybenz

yes I understand that but do you realize it will still be slow with the hayabusa motor. I mean you will beat people to 60 foot mark but thats about it. Yes bring up the fasct it beat a ferrari off the line yes off the line not in a quarter mile no way. It will more than likely run like 13's in the quarter

Yep 13:29 to the Ferrari's 13:40 in quarter mile if its legit. Personally I thought the Ferrari could do better in quarter mile.

YouTube - Ferrari vs smart

YouTube - Ferrari vs smart

[Flogler]

Does anyone know which pin the obd11 connector is for the tach? I am still messing with my glowshift tach install. Thanks.

[pitstopautoinc]

I'm not sure, but if you put an oscilliscope onto the obd2 pins you'll see which one is reading a pulse per revolution.

[pitstopautoinc]

Okay so a few ppl asked me for a close up diagram of how to wire in the autometer 9117 into the coil pack. Here is the diagram, sorry it took so long, been working on my wilwood disc brake conversions. anyhow when you're doing this, it is very very important that you DO NOT splice into the TRIGGER WIRE you are splicing into the 12v ignition on wire! This is also helpful, because for those of you who don't want a big fancy tach, you can buy just the autometer digital controller and have just a shift light and the cool thing about the digital control it has memory in it, so that it tells you what was the last peak rpm you were running and it allows you to set your shift light down to the very 5 rpm. for instance you can set your shift light to 5005rpm, 5010rpm, 5015 and so on and so on. well any how heres the pic:

[pitstopautoinc]

oh one more thing, when you're cutting the #1 12v wire yes you completly break the circuit. the red wire on the 9117 adapter is the feed in and the red/green is the feed out completing your circuit now.