Have a local alarm shop asking me where the tach signal wire is located on my HDJ81. Anyone have the best idea on which wire to tap into?
Tachometer Signal Wire Location HDJ81
- Thread starter absalom
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sailor
Jackass of all trades
Remote start? Any luck with the sale? It is on the IP.
I've found remote start to be of limited use on these trucks, they can idle all day and never warm up. But then, you're in AZ, so that' s probably not your goal, lol. I guess if you were looking to cool the interior down with AC it would work for that.
Tach sensor is on the IP, I think it's a 2 wire connector.
Tach sensor is on the IP, I think it's a 2 wire connector.
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We've decided to hang on to it for now. IP, got it thanks!
Great point. It's not even so much that I want the remote start terribly badly, just that it was included with my keyless entry, and I was billed for remote start install. So I may as well make an effort to get it solidly hooked up.
No EGR on 1HD-T's (not the ones I've ever seen anyway). I thought that was a 1HD-FT/1HD-FTE thing.
1HDT comes straight from IP to Gauge cluster.
anyone verify this working... I've never been able to have Tachometer working on my viper due to the tach voltage being too low. so I have been using timed start mode.
I did tap into the cluster is it any better to tap into the injection pump?? does it matter which wire?
mines been working like this for the past 10 years or so but willing to give Tachometer mode a try again.
I did tap into the cluster is it any better to tap into the injection pump?? does it matter which wire?
mines been working like this for the past 10 years or so but willing to give Tachometer mode a try again.
bumping an old thread as I have the dash and cluster apart again.
I really would like to have Tach working on my Viper remote start 5904V
Tach wire seems to be on Connector "C" pin 4 and according to the EWD wire color is BLK.
Viper manuals states wire should read 1-6vac depending on engine speed
I really would like to have Tach working on my Viper remote start 5904V
Tach wire seems to be on Connector "C" pin 4 and according to the EWD wire color is BLK.
Viper manuals states wire should read 1-6vac depending on engine speed
Thanks for the wiring diagram. Did pin 4 work for you? I have an HDJ80 with the 12 valve 1HDT and will be installing a Defi FD display unit that can display engine RPM so I need to tap into the tach wire. I can see the plug on the pump but it’s a tight fit in there and grimy too so I would like to tap inside the vehicle if possible.
I haven’t been able to get the TACHO wire to work with my remote start. So I’ve defaulted to just using timed mode for remote start.
Yeah the tacho wire also didn’t work for me. So I ordered one of those devices that clips onto the alternator and sends out a tach signal. Hopefully it works. I really want to get the rpm working on my Defi FD unit since my oem tach has been acting up for quite some time now. It’ll drop to zero but come back to life after a tap or two.
Got the Alternator tach signal adapter. Installed on my HDJ80. For how cheap it is I can’t believe it worked. I did have to set the number of cylinders in my Defi FD to 8 instead of 6.
