Microtech Area is for discussing Microtech systems

Microtech microtech mtx-8 wiring help please

Old 05-19-10, 03:39 PM
  #1  
hit it sideways
Thread Starter
iTrader: (6)
 
vrtkevin's Avatar
 
Join Date: Jul 2007
Location: hemet
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
NJ microtech mtx-8 wiring help please

let me start by saying I am not a wiring person but can follow simple instructions...
I have built a stage 4 wrx so I am not stupid by all means.

I paid a shop to wire my harness so everything is just plug and play. I got it back and everything for the motor harness was done but now I am left with the CAS and coils to wire up and I have no clue where to even start. I tried to call the shop that wired the rest and all I get is that the owner will talk to the guy that wired it and will e-mail the directions or just to bring the car down and he will finish it. The problem is that the shop is 4 hours away and the car isn't running with out the finished wiring and pulling a trailer there and back is not cheap.
vrtkevin is offline  
Old 05-19-10, 04:37 PM
  #2  
oi oi oi
5 Year Member
iTrader: (7)
 
john ward's Avatar
 
Join Date: Jan 2006
Location: wilmot,oh
Posts: 611
Likes: 0
Received 0 Likes on 0 Posts
pretty atrait forward. a quick google search will get you the diagram. Run harnes from cpu to cas cut splice solder appropriate wires then done. Run key on power to coils route harnes from cpu out think there a ground in it and connect coils to approprate wire on harness.
john ward is offline  
Old 05-20-10, 11:36 AM
  #3  
hit it sideways
Thread Starter
iTrader: (6)
 
vrtkevin's Avatar
 
Join Date: Jul 2007
Location: hemet
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
thanks for the help. should I be running a relay from the pink wire of the microtech to the coils or just run the pink wire straight to the coils?

Also where do I need to run the tachometer wire?
vrtkevin is offline  
Old 05-20-10, 07:27 PM
  #4  
talking head
5 Year Member
 
bumpstart's Avatar
 
Join Date: Apr 2008
Location: Perth, WA, OZ
Posts: 2,775
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by vrtkevin View Post
thanks for the help. should I be running a relay from the pink wire of the microtech to the coils or just run the pink wire straight to the coils?

Also where do I need to run the tachometer wire?
cars tacho wire goes to the blue/white wire on LTx8/mtx8

as for the relay and the pink wire,, pink should go to ignition switch output
IE its to tell the ECU the ignition is switched on,, nothing else--its not a bus wire !
coils should be powered up directly already from the ignition relay,, which is also switched from the IG switch

****,, yes,, but doing as you describe runs the risk of the new ignition relay being self looped,, and the ECU may never turn off
( you wont understand it till you see the issue yourself )
-- or worse,, an issue where the pink wire may be used as a bus and handle way too much current

an LTX/MTX diagram is posted ad nauseum on the net-- use it !

the diagram also says to run the red power from the battery live-- use it !
( it does not say hook me to the alt output,, and there is good reasons for this ! )
bumpstart is offline  
Old 05-20-10, 08:01 PM
  #5  
Lynch
10 Year Member
iTrader: (2)
 
Lynch's Avatar
 
Join Date: Oct 2004
Location: Canada, Ontario
Posts: 296
Likes: 0
Received 0 Likes on 0 Posts

Last edited by Lynch; 05-20-10 at 08:03 PM. Reason: link
Lynch is offline  
Old 05-20-10, 08:04 PM
  #6  
Lynch
10 Year Member
iTrader: (2)
 
Lynch's Avatar
 
Join Date: Oct 2004
Location: Canada, Ontario
Posts: 296
Likes: 0
Received 0 Likes on 0 Posts
Lynch is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Lou Byer
General Rotary Tech Support
19
05-07-19 02:02 PM
toplessFC3Sman
2nd Generation Specific (1986-1992)
6
03-20-18 01:54 PM
freq
Haltech Forum
5
09-13-15 07:45 AM


Thread Tools
Search this Thread
Quick Reply: Microtech microtech mtx-8 wiring help please


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: