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Old 02-07-2016, 03:48 PM
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guye guye is offline
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Join Date: Jan 2002
Location: Melbourne, Australia, VIC
Cobra Make, Engine: AP Pace427 (AP4033) GM L77 6.0L TR6060
Posts: 838
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Oh, and I'm having the devil of a time trying to get my speedo working.

It is electronic. (Speedhut) It only has one wire for the speed.

I do not have a vss output from my ECU. So I am taking the feed directly from my vss sensor on my tremec tr6060 gearbox. I know this works, because it is currently wired into my ECU and my scanner reports the speed ok.

I have tried connecting the speedo wire to both sensor wires in turn, with no result.

I then tapped into the sensor wires directly at the source and ran a second wire just in case I was getting too much loss. I only tapped into what I'm sure in the 'high' wire (white with purple stripe). No luck.

I then also tried to insert a booster voltage from a 12v source through a 4.7kohm resister. Still nothing.

I haven't tried insert the lift voltage into the 'low' wire in case this damages the ECU cause they are connected in parallele after all.

However today I notice that my odb2 scanner has stopped reporting speed now too!

Any (helpful) advice gratefully accepted....

PS: Don't mess with me, I'm close to the edge! So close....
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