graveltrapp Posted December 20, 2012 Report Share Posted December 20, 2012 I finally found and bought a 620 tach and it should be here Friday. I have yet to have my dash out and was wondering if there are any tricks I should know about before diving in, Also does anyone have any experience with plastic polish? The lens has some scratches I would like to try to remove. Quote Link to comment
ggzilla Posted December 20, 2012 Report Share Posted December 20, 2012 No need to take the dash out. Just remove the cluster lid (gauge fascia) The lamps, power and ground wires on fed off the back of the cluster. But the 620 tachometer needs one wire run out to the coil negative terminal. Quote Link to comment
graveltrapp Posted December 23, 2012 Author Report Share Posted December 23, 2012 Tach came in the mail yesterday, I will need to make a new clear face for it. It has a domed one that was maybe for a clock. It has a hole in the lower corner and one of the screw holes is cracked. Quote Link to comment
izzo Posted December 23, 2012 Report Share Posted December 23, 2012 its domed because the gauges in the 620 are domed... its to match the rest of the 620 dash. Quote Link to comment
ggzilla Posted December 23, 2012 Report Share Posted December 23, 2012 And all 1200 GL gauges are domed too, to keep glare off. If you have a spare 1200 glass, i'd use that. They never get scratched. Quote Link to comment
graveltrapp Posted December 24, 2012 Author Report Share Posted December 24, 2012 No spares, but I will have to take a second look in the light tomorrow, but I think my speedo and Aux. gauges are flat. Quote Link to comment
ggzilla Posted December 24, 2012 Report Share Posted December 24, 2012 Yes, all 1200 DX come with flat glass. Quote Link to comment
datsunfreak Posted December 24, 2012 Report Share Posted December 24, 2012 Should be simple enough to trace that black ring onto some lexan and cut it out? Quote Link to comment
graveltrapp Posted December 25, 2012 Author Report Share Posted December 25, 2012 That's what I was thinking. Quote Link to comment
Davec Posted January 25, 2013 Report Share Posted January 25, 2013 the wiring is lower down the page, truck tach to 1200 http://datsun1200.com/modules/mediawiki/index.php?title=Tachometer_Wiring Quote Link to comment
Davec Posted January 25, 2013 Report Share Posted January 25, 2013 And on the flat glass either Morrison or I might have the glass. Quote Link to comment
graveltrapp Posted January 25, 2013 Author Report Share Posted January 25, 2013 I just this week went to Aaron brothers frame shop and bought a acrylic picture frame and plan to make one from it. I wont get to it this week and next week I will be down in Portland for the week. Thanks for the wiring link, I will definitely be using it as there are no wires attached to the back. I could use a couple of gauge lights for the tach as mine did not come with any if you have any of those. I see your in Vancouver and could cross paths sometime next week if you had any. Thanks for the offer and lead Quote Link to comment
edp Posted January 26, 2013 Report Share Posted January 26, 2013 Jason, if your coming tomorrow to northgate I have a glass lens off a speedo I'll bring ya. Let me know if your going to be there otherwise I'll avoid a trip to cap hill. Evan Quote Link to comment
graveltrapp Posted January 26, 2013 Author Report Share Posted January 26, 2013 E. Thanks for the offer but lets hold off, I am trying this out first since I now have $2.99 invested. For some reason when rotating in Photobucket it does not seem to transfer to the img. code? Goofy I know. Any way here is the plan, just need to get out to the shed and get the dremel and start making a dusty mess. Is the speedo the same screw hole pattern? have not had my dash off yet. See you there. Quote Link to comment
edp Posted January 26, 2013 Report Share Posted January 26, 2013 OK but trust me you'll like glass better for a lense, I have a plastic one on my clock & it's fine but it refracts light differently. See ya tomorrow. I'll be there 11-12 ish... Quote Link to comment
ggzilla Posted January 27, 2013 Report Share Posted January 27, 2013 > For some reason when rotating in Photobucket it does not seem to transfer to the img. code? After modifying the photo, your browser may continue to show the old photo for a while, depending on the cache settings. And also sometimes Photobucket doesn't update their caching server for a while. It's not due to rotation -- any photo mod made can cause the old photo to keep showing. Quote Link to comment
graveltrapp Posted January 28, 2013 Author Report Share Posted January 28, 2013 Evan, thanks for bringing the lens by today. Had no idea that the lens was actually glass. I will get it put into the gauge and install it late next week. I will post some pics then. Dave I will try clearing the cache and see if that helps, thanks for the help Obi one. Quote Link to comment
edp Posted January 28, 2013 Report Share Posted January 28, 2013 No problem, better than plastic, just dont scratch it trying to remove that goofy label thats on it, use some solvent & then wash it well. Wash up that gasket in soapy water & it'll be fine as well. Lets meet up next week some time. E Quote Link to comment
datsunfreak Posted March 19, 2013 Report Share Posted March 19, 2013 Ever finish this install? Just got my 620 tach back and curious how it went... Quote Link to comment
graveltrapp Posted March 19, 2013 Author Report Share Posted March 19, 2013 Tach has been in for a week or so now and is working flawlessly. I ended up using one of the small screws that hold the inner gauge to the outer housing as a ground. Only other wire I had to run was to the Negative side of the coil and voila. I do need to locate the two light housing as mine were missing but that is not effecting the operation, and thanks to Evan I did go with the glass lens which looks great but was a little tricky to keep centered up as I assembled the panel back together because there is no recess for the tach glass like there is for the speedo and multi gauge faces, it just gets sandwiched. I will post up some pics later today. Quote Link to comment
datsunfreak Posted March 20, 2013 Report Share Posted March 20, 2013 Excellent. :thumbup: Quote Link to comment
graveltrapp Posted March 27, 2013 Author Report Share Posted March 27, 2013 As mentioned earlier the toughest part was keeping all the parts (lens and tach) centered up in the instrument panel while assembling it because there was no recess for the glass lens to rest in like the other two were provided with. While I had the dash all apart,I took the opportunity to paint the cluster black. I was tired of looking at the tired and dated silver color that had come from the factory, so out with the Satin black and its looking better. Still sporting the block off plate and silver painted cluster. Tired and dated. I ended up grounding the tach on one of the two screws that hold the speedo guts to the outer shell seen here. The panel has a dedicated ground, but I could not find the appropriate fitting to get a good consistent contact. I tried to solder it, but the heat loosened it in the circuit board and I was worried about it losing ground. Here are a few crappy final shots with it all back together minus the plug for the manual choke hole which I had misplaced but later found. Quote Link to comment
graveltrapp Posted March 27, 2013 Author Report Share Posted March 27, 2013 I really need to repaint that wheel. Quote Link to comment
831Sunny Posted March 29, 2013 Report Share Posted March 29, 2013 looks pretty freaking sweet... Quote Link to comment
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