TikiShack Posted April 7, 2014 Share Posted April 7, 2014 I want to monitor revs. I dont want to spend much. I can get a cheap china tach for under 20 bucks on ebay. I need to know if there's a factory terminal that will tell a tach what the revs are, or do I have to add a sensor? Id think there is a terminal or wire I could tap into. Thanks! Quote Link to comment Share on other sites More sharing options...
WME Posted April 7, 2014 Share Posted April 7, 2014 Lots of maybes. Some tachs trigger off the coil and will have a 4/6/8 switch. Some tachs trigger off the amplifier. Some of the Toyotas have a tach wire, for factory use when the chassis was upgraded to an SR-5. Have fun Quote Link to comment Share on other sites More sharing options...
turtle Posted April 11, 2014 Share Posted April 11, 2014 As WHM said, most all will pull their signal from the coil. If you want higher revs and slower speeds you need to swap out your rear end gearing. Stock is more than likely going to be 4.10:1 (there are some exceptions but not many) I have always used 4.56:1 in my toyota RVs (well the two I have owned). If you change your rear end gearing you need to get a speedo ratio adaptor to match the speedo to the new gearing so that you are seeing the actual MPH in the speedo In my V-6 shorty this gives me an interstate crusing speed of 70-75 in over drive with the RPMs around 3200- 3400. I prefer the smaller US and state highways and staying around 55-60 which clocks in around 2600 -2800 rpm BUT I can BOGGIE when I need to Quote Link to comment Share on other sites More sharing options...
Maineah Posted April 11, 2014 Share Posted April 11, 2014 There is a tack signal connection in the diagnostic connector. Quote Link to comment Share on other sites More sharing options...
waiter Posted April 11, 2014 Share Posted April 11, 2014 I thought I seen a post a few years ago about a Forunner instrument cluster would plug in. and it had a tach. john mc 88 dolphin 4 auto sold Quote Link to comment Share on other sites More sharing options...
5Toyota Posted April 11, 2014 Share Posted April 11, 2014 the deluxe sr5 truck has a tac my late 87 sr5 4wd has the delux dash full gages with a tac. i had a 87 same 4wd but a 22r carb with the same dash as the moterhomes. so maybe dash from a truck or a four runner. Quote Link to comment Share on other sites More sharing options...
Maineah Posted April 11, 2014 Share Posted April 11, 2014 SR5's had the tacks. Quote Link to comment Share on other sites More sharing options...
Derek up North Posted April 12, 2014 Share Posted April 12, 2014 I think the impossible to find item is an SR-5 cluster (with tach) that also has the column gear shift indicator included. Quote Link to comment Share on other sites More sharing options...
Bob C Posted April 12, 2014 Share Posted April 12, 2014 If you switch in a new cluster, you need to switch out one of the signal sending units, I forgot which one. Temp I believe. Someone without a senior moment will answer that. Quote Link to comment Share on other sites More sharing options...
Derek up North Posted April 12, 2014 Share Posted April 12, 2014 Yes, the temperature sensor needs to be changed. Quote Link to comment Share on other sites More sharing options...
twoblocked Posted April 12, 2014 Share Posted April 12, 2014 It's the oil pressure sender that needs to be changed out. If you use the pressure sender from the original V-6 you will blow the pressure indicator in the SR5 instrument cluster. I installed an SR5 cluster (no shift indicator) in my '91 Winnebago Spirit. I purchased a pressure sender for an SR5 cluster and it works perfectly. Quote Link to comment Share on other sites More sharing options...
turtle Posted April 12, 2014 Share Posted April 12, 2014 I went with A column mounted gages (oil preasure, water temp and trans temp). I could not find a columm shift SR5 cluster Quote Link to comment Share on other sites More sharing options...
WME Posted April 12, 2014 Share Posted April 12, 2014 On the early models a SR-5 panel from the same year works, or at least the same model years for that style. The newer Toys need a panel from a T-100 pickup. it has the dash prndl lights In any case you need to change the oil pressure sender from idiot light to gauge sender Quote Link to comment Share on other sites More sharing options...
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