S2 wiring questions

Whizbang · 04-13-2009, 05:28 PM

Alright, so i have a few questions i need verified.

1. There is a White w/ Red Stripe wire with a eye hole connector that is connected into the White w/ Red stripe wiring coming off the main fuse in the engine bay. I have no idea what it goes to. I don't think it should go to the alternator because that that will be connecting to the other side of the fuses. Any thoughts?

2. For the megasquirt, i am going to put in the required fuses by using the OEM fuse block. I plan on reusing slots that are currently unused. Case in point, the fuel pump, cruise, and possibly the meter back. I want verify that the "meter back" fuse is the gauge cluster back lighting. Also I need to verify that the wires in the fuse block are what i think they are.

For the fuel pump:
There is small Black w/ Lt. Green strip wire and a large Black w/ white striped wire. Is the larger wire a ground or a 12v power?

For cruise:
There is a small brown wire and a large black w/ white stripe wire. Again, which is ground and power? This larger black w/ white striped it tied also the power window fuse.

The Meter Back:
Has a small green w/ yellow stripe wire and large black w/ yellow wire. Again, which is ground, which is power?

Whizbang · 04-13-2009, 05:32 PM

Okay i think i found the right wiring manual, the smaller wires are all going FROM the fuse to the component. The larger wires connect back to the ign. switched power source.

Still need to figure out issue #1 and what the meter back fuse is.

djmtsu · 04-13-2009, 05:51 PM

#1 is for the alternator.

Whizbang · 04-13-2009, 08:53 PM

so then it would charge the battery through the main fuse. Interesting. But since my battery is relocated to the rear, wouldn't just running the alt to the other incoming side of the fuse block work, since i also have the alt connected to the battery. I think that is how i worked my old yellow Rx-7

rx4ur7 · 04-14-2009, 04:37 PM

Haven't you downloaded the wiring diagram for that car yet? It will sure help you out.

Whizbang · 04-14-2009, 05:10 PM

all the FSMs i have are for 84-85 and 79-80

j_tso · 04-15-2009, 09:41 AM

[http://foxed.ca/foxed/index.php?page=rx7manual]dude...[/url]

RX-7 Chris · 04-15-2009, 09:46 AM

This should get you there: http://foxed.ca/rx7manual/manuals/19...ingDiagram.pdf

Whizbang · 04-15-2009, 09:49 AM

wired up everything except the backlighting for gauges and it has all worked so far. So i think all is well. going to look into the diagrams for the source of the backlighting and dimming.

RX-7 Chris · 04-15-2009, 09:53 AM

you may be having a problem with the dimmer knob.

Whizbang · 04-15-2009, 09:55 AM

actually i think i might. I have not connected the wiring yet to see if that is an issue, BUT i can't turn the parking lights off. They are always on...

RX-7 Chris · 04-15-2009, 10:00 AM

the parking lights and the dash lights run on the same system. Usualy on most cars the lights ground through the switch but I can't remember if the rx-7 works like that though. I'll look at that right now.

04-13-2009, 05:32 PM	#2
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	Okay i think i found the right wiring manual, the smaller wires are all going FROM the fuse to the component. The larger wires connect back to the ign. switched power source. Still need to figure out issue #1 and what the meter back fuse is. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

04-13-2009, 05:51 PM	#3
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (10) Posts: 4,043 Rep Power: 21	#1 is for the alternator. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

04-13-2009, 08:53 PM	#4
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	so then it would charge the battery through the main fuse. Interesting. But since my battery is relocated to the rear, wouldn't just running the alt to the other incoming side of the fuse block work, since i also have the alt connected to the battery. I think that is how i worked my old yellow Rx-7 __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

04-14-2009, 05:10 PM	#6
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	all the FSMs i have are for 84-85 and 79-80 __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

04-15-2009, 09:49 AM	#9
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	wired up everything except the backlighting for gauges and it has all worked so far. So i think all is well. going to look into the diagrams for the source of the backlighting and dimming. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

04-13-2009, 05:28 PM	#1
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	S2 wiring questions Alright, so i have a few questions i need verified. 1. There is a White w/ Red Stripe wire with a eye hole connector that is connected into the White w/ Red stripe wiring coming off the main fuse in the engine bay. I have no idea what it goes to. I don't think it should go to the alternator because that that will be connecting to the other side of the fuses. Any thoughts? 2. For the megasquirt, i am going to put in the required fuses by using the OEM fuse block. I plan on reusing slots that are currently unused. Case in point, the fuel pump, cruise, and possibly the meter back. I want verify that the "meter back" fuse is the gauge cluster back lighting. Also I need to verify that the wires in the fuse block are what i think they are. For the fuel pump: There is small Black w/ Lt. Green strip wire and a large Black w/ white striped wire. Is the larger wire a ground or a 12v power? For cruise: There is a small brown wire and a large black w/ white stripe wire. Again, which is ground and power? This larger black w/ white striped it tied also the power window fuse. The Meter Back: Has a small green w/ yellow stripe wire and large black w/ yellow wire. Again, which is ground, which is power? __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

04-14-2009, 04:37 PM	#5
rx4ur7 Rotary since 1972 Join Date: Nov 2008 Location: Tucson iTrader: (0) Posts: 231 Rep Power: 17	Haven't you downloaded the wiring diagram for that car yet? It will sure help you out.

04-15-2009, 09:41 AM	#7
j_tso Rotary Fan in Training Join Date: Mar 2008 iTrader: (0) Posts: 65 Rep Power: 17	[http://foxed.ca/foxed/index.php?page=rx7manual]dude...[/url]

04-15-2009, 09:46 AM	#8
RX-7 Chris Rotary Fanatic Join Date: Mar 2008 Location: Colorado Springs, CO iTrader: (2) Posts: 132 Rep Power: 17	This should get you there: http://foxed.ca/rx7manual/manuals/19...ingDiagram.pdf

04-15-2009, 09:53 AM	#10
RX-7 Chris Rotary Fanatic Join Date: Mar 2008 Location: Colorado Springs, CO iTrader: (2) Posts: 132 Rep Power: 17	you may be having a problem with the dimmer knob.

04-15-2009, 09:55 AM	#11
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	actually i think i might. I have not connected the wiring yet to see if that is an issue, BUT i can't turn the parking lights off. They are always on... __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

04-15-2009, 10:00 AM	#12
RX-7 Chris Rotary Fanatic Join Date: Mar 2008 Location: Colorado Springs, CO iTrader: (2) Posts: 132 Rep Power: 17	the parking lights and the dash lights run on the same system. Usualy on most cars the lights ground through the switch but I can't remember if the rx-7 works like that though. I'll look at that right now.