menzzer37 Posted May 18, 2009 Share Posted May 18, 2009 Has anyone tried using a computer db37 cable to connect the relay board to the ecu? I found one with 26 awg wire, but I'm still not sure if this is heavy enough. I built my own, but it's not pretty and the diy cables are expensive. Any thoughts? Quote Link to comment Share on other sites More sharing options...
big-phil Posted May 18, 2009 Share Posted May 18, 2009 search, someone posted about this same topic I'm thinking? Quote Link to comment Share on other sites More sharing options...
menzzer37 Posted May 18, 2009 Author Share Posted May 18, 2009 I read the one forum post where a parallel cable was considered, but he never finished the thought! It says 18 ga, but All the heavy loading is through the relay board right? All power distribution... Quote Link to comment Share on other sites More sharing options...
mobythevan Posted May 18, 2009 Share Posted May 18, 2009 The magamanual recommends using 18-20 gauge wire. I would be concerned about the injector wires, they carry a bit more current than most wires in the DB37. Quote Link to comment Share on other sites More sharing options...
menzzer37 Posted May 19, 2009 Author Share Posted May 19, 2009 I was doing more research and found that 26 gauge can hold 3 amps... Moby, would you know what kind of amperage the injectors will pull? I can image much more through traces on a pcb Quote Link to comment Share on other sites More sharing options...
mobythevan Posted May 19, 2009 Share Posted May 19, 2009 Taking the simple case, no PWM and running high impedance injectors that measure 12 ohms, that would be approximately 14 volts/12 ohms= 1.2 amps Low impedance injectors that measure 2.5 ohms with a dropping resistor of 6 ohms (what I usually run) would be approximately 14 volts/8.5 ohms = 1.6 amps Those numbers are per injector so you can figure out depending on your engine and number of injectors along with how you wired them. This should be good for an approximation. Are there two injector wires in the DB37 or four, I can't remember off hand. Quote Link to comment Share on other sites More sharing options...
menzzer37 Posted May 19, 2009 Author Share Posted May 19, 2009 Thanks! That pretty much kills the idea. I have been talking with custom cable inc; they are building a quote for what a 20 awg 6' cable would cost. I'll keep this thread updated if it's halfway affordable. I think this would be a great option. They will sell in large quantities as well, so maybe a large group buy would be in order! Quote Link to comment Share on other sites More sharing options...
l28et280z Posted June 4, 2009 Share Posted June 4, 2009 honestly the diy cable is not that expensive $70, and for the trouble it saves you, you cant beat it....in my opinion Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.