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sunpro tach wiring

4K views 13 replies 8 participants last post by  crazzywolfie 
#1 ·
I can bolt stuff up and take stuff off pretty easy. My one weakness is I'm a total goober when it comes to wiring. I would like to put a sunpro tach in my truck. I have the small one. It has no instructions with it. Can some one tell me were to hook what wires? I think If some said put the red wire here put tge green wire here and ground it here and the white wire goes here I could do it. I know that soinds dumb but when it comes to wiring only thing Im good at are making wires melt together and making stuff smoke.
 
#2 ·
I have one too ;D, need to check some of my wires as it occasionally decides to not work,

first decide where to mount it, I drilled a hole in my dash for the wires and mounted it on top just to the right of the steering wheel, line of sight and no obstructions.

biggest thing to be careful is the power wire for the light, needs to go to the right spot in the fuse system,

use solder joints for any extensions necessary,

best to run main power directly to the battery

and from their website, a list of user manuals.

http://www.sunpro.com/user_manuals.php
 
#5 ·
ledzep_06 said:
black wire - ground
red wire - switched 12v source
green wire - coil
white wire - i believe is for the light if i remember correctly
exactially

81 w250 clubcab 318 mpfi 727 d60F&R 4.11 8 inch lift 35s
94 chevy k1500 mild 350 325 hp 4L60E 3.73 32s
 
#6 ·
Ok tach is in and working. I can't find a good place to wire in the light tried tge fus box but it either stays on all the time or doesn't work at all depending on were I put it. Thanks for the help so far. Were did you guys put the white wire?
 
#9 ·
You can also hook it into the tail/marker light wire, and then if the light goes out on the tach, you will know that you have no tail lights.  This is how I hook mine up. 
 
#11 ·
You could also just hook it to the power source for the tach and have it on whenever the tach has power. Before my last tach caught fire (literally) I had it in the left corner of the dash and shoehorned the wires between the dash and the trim. (my dash is to pretty to put holes on)
 
#12 ·
Ive had all of mine mounted to the steering column held in place with a large hose clamp. Its easily visible and the wires can be hidden down the column. Only thing is it generally blocks the speedo but ive only had one vehicle with a working one, so driving by rpm for mph has become second nature
 
#13 ·
hoov100 said:
You could also just hook it to the power source for the tach and have it on whenever the tach has power. Before my last tach caught fire (literally) I had it in the left corner of the dash and shoehorned the wires between the dash and the trim. (my dash is to pretty to put holes on)
thats how mine is in my truck

81 w250 clubcab 318 mpfi 727 d60F&R 4.11 8 inch lift 35s
94 chevy k1500 mild 350 325 hp 4L60E 3.73 32s
 
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