I am hoping that the diodes and resistors are the difference between the td42 and rd28 clusters as in the td42 wiring diagram the tacho pulse goes direct to the cluster
I am hoping that the diodes and resistors are the difference between the td42 and rd28 clusters as in the td42 wiring diagram the tacho pulse goes direct to the cluster
Got a hold of an early td42 cluster used the tacho from it and just swapped the faces and needle over had to cut out some plastic in the back of the cluster for it to fit but it screwed straight up and does the job.
Does it connect direct to the sensor, or via another control box?
Did it have resistors/zener-diode on the back of the cluster?
-------------------------------
1992 Patrol GQ LWB TD42
Connects straight up the early one had 4 screws the bottom one was just another earth was marked d-tam on the board.
The other 3 were the same gnd ign and signal .
Where i disconnected the 2.8 glow controller i joned the yellow wire white trace to the yellow black trace wich then goes up to the cluster.
The circuit board hanging off it was a little bigger so i had to cut away some white plastic in the housing and all good .
For the needle i pushed it clock wise then kept a note of where it sat between the m and i and then fitted the other one up the same after changing the faceplate over.
Good to hear.
I received the Dakota Digital adapter today. I won't have any time to look at it until next week though.
-------------------------------
1992 Patrol GQ LWB TD42
Geez, my gq doesn't have a tacho and i was gonna put one in, didn't think too much about it till reading this. Sounds like a curly one. Might be easier to put a proxy sensor on the crank.
Does every standard TD42 patrol get the signal from the alternator? Will the wire be there or will i have to install everything from scratch?
Last edited by Richo460; 1st June 2012 at 12:06 PM.
If you going through hell...Keep going
GQ wagon locked - lifted - 33's, 02 SS ute, XB coupe 460bb, KTM530
Mine doesn't have the wire from the alternator, but you can add one (or your auto-electrician). It just connects to one of the 3 phase wires.
I hope to get some spare time to have a look at it soon....
-------------------------------
1992 Patrol GQ LWB TD42
Sorry for the delay .... rolled vehicle set my schedule behind.
Found there is a cam sensor on the TD42. Hopefully should be able to test it this week.
-------------------------------
1992 Patrol GQ LWB TD42
Got everything working .. except the tacho. The signal converter is functioning and I have a handheld tacho showing the RPM.
I pulled out the cluster, and dismantled it. I ran a signal generator into it and get nothing. It might need a pull-up resistor. Would be good to confirm if this unit was actually faulty before buying another...
-------------------------------
1992 Patrol GQ LWB TD42
Mate I don't know if its relevant to what your doing but I did find out the Patrol tacho's are quite finicky & ultra sensitive when fitting an after market HEI system.Originally Posted by spektrum
I use a 1 watt 50k oms veritable trim pot to find its happy place. For around $2 its a very cheap testing tool for you to trouble shoot yours.
spektrum (5th October 2012)
Posting Permissions
Reply With Quote
