Auto Meter tacho help if poss? - Defender Source
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  #1  
Old December 9th, 2016, 04:38 AM
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Auto Meter tacho help if poss?

Hi guys, I'm in the UK and currently building a 90 with galv chassis and NAS cage and hood.
I have a fresh 4.6 V8 GEMS engine and I've bought an AutoMeter tacho &(the big stupid one with a shift light....just because).

Anywho it won't work and I may need something for the tacho to talk to the ECU, do any of you guys run one, or know how to go about it?

Thanks.

PS, love this site, especially the Defender Sightings thread, I love how most of your trucks are not ruined with the crap that most of the UK owners adorn their trucks with!
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  #2  
Old December 9th, 2016, 06:48 AM
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Are you running the adapter for a distributor-less ignition?

"
Auto Meter 9117 Details

Tach Adapters
This Tach adapter will allow you to connect a tachometer, shift light or RPM activated switch to a distributorless ignition system (Including 1999 and newer Ford Mustangs). This adapter senses the current from the positive coil source wire and converts it into a 12-volt square wave signal that can be read by Auto Meter Tachs and accessories. Compact and completely potted in polyurethane for vibration and moisture protection."
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  #3  
Old December 9th, 2016, 04:46 PM
MattH
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You can run the tach feed straight from the alternator.
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  #4  
Old December 10th, 2016, 02:25 AM
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Greeni
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Thanks chaps, I'm using the grey wire straight from the ECU but it won't work, I'll try the alternator, then get an adaptor if that does not work.
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Old December 10th, 2016, 09:09 AM
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Should work off the grey alternator wire, but I am no V* expert, that's for sure.
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Old December 10th, 2016, 04:42 PM
MattH
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You use the 'W' terminal to get the rpm feed to the rev counter.
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  #7  
Old December 10th, 2016, 06:44 PM
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I didn't think autometer tachs were setup to run from an alternator.
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