Coolant temp sensor harness/reverse lights?
#1
Canned. I got CORNED!
Thread Starter
iTrader: (5)
Join Date: Mar 2007
Location: Appleton, WI
Posts: 1,029
Likes: 0
Received 0 Likes
on
0 Posts
Coolant temp sensor harness/reverse lights?
Nearly done! Another little question.
I've got all the engine bay wiring done except for the coolant temp sensor. (the one at the lower left of the radiator). I'm assuming this runs to the ECU and the stock gauge?
Where is the harness for it? I would guess it's on the battery harness but I can't find it anywhere. I'll check the FSM again but I couldn't find it once.
Also, my reverse lights are always on when the car is in run. Did I hook something up backwards or do I need to swap the reverse light switch? Which one is it?
I've got all the engine bay wiring done except for the coolant temp sensor. (the one at the lower left of the radiator). I'm assuming this runs to the ECU and the stock gauge?
Where is the harness for it? I would guess it's on the battery harness but I can't find it anywhere. I'll check the FSM again but I couldn't find it once.
Also, my reverse lights are always on when the car is in run. Did I hook something up backwards or do I need to swap the reverse light switch? Which one is it?
#2
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
Where is the harness for it? I would guess it's on the battery harness but I can't find it anywhere. I'll check the FSM again but I couldn't find it once.
Also, my reverse lights are always on when the car is in run. Did I hook something up backwards or do I need to swap the reverse light switch? Which one is it?
#3
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes
on
19 Posts
It's a part of the Front harness. Page 50-28 of the free, online Factory Service Manual shows where it is routed to and what harness it belongs to . One wire goes to ground and the other to pin 1H of the ECU.
Page 50-120 shows the ground points on the car. That water switch uses gnd point (6) of JC-01, which is located below the Trail coil assy. Actually any good chassis ground would do for this critter.
EDIT: I wrote the above prior to NZ's post above. Just a little slow hitting the send/save button.
Page 50-120 shows the ground points on the car. That water switch uses gnd point (6) of JC-01, which is located below the Trail coil assy. Actually any good chassis ground would do for this critter.
EDIT: I wrote the above prior to NZ's post above. Just a little slow hitting the send/save button.
#4
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
Posts: 20,563
Likes: 0
Received 21 Likes
on
19 Posts
There's two colored sets of wires at the reverse/over the top switch. On the cars I've seen, there are two red wires and two green wires.
So you take a meter and put it on ohms. Put the transmission in reverse. See which pair of wires has continuity. That is the reverse switch wires. The thing to know, is the reverse set of wires gets 12vdc going to it from the Front harness. The Fifth gear switch gets NO power to it. The fifth gear switch just puts a gnd on a wire of the ECU when in fifth gear. And the split air solenoid also if memory serves.
I remember NOTHING about the connections from the switch wires to the Front harness. Just make sure the connector on the front harness has 12vdc on one of the wires.
So you take a meter and put it on ohms. Put the transmission in reverse. See which pair of wires has continuity. That is the reverse switch wires. The thing to know, is the reverse set of wires gets 12vdc going to it from the Front harness. The Fifth gear switch gets NO power to it. The fifth gear switch just puts a gnd on a wire of the ECU when in fifth gear. And the split air solenoid also if memory serves.
I remember NOTHING about the connections from the switch wires to the Front harness. Just make sure the connector on the front harness has 12vdc on one of the wires.
#5
Canned. I got CORNED!
Thread Starter
iTrader: (5)
Join Date: Mar 2007
Location: Appleton, WI
Posts: 1,029
Likes: 0
Received 0 Likes
on
0 Posts
I'm wondering if the previous owner clipped the wires because there is NOTHING up there that I can find on the front or battery harness. Good to know that I don't need it, thank you
I was guessing that switching the wires wouldn't help, but wouldn't the lights turn off when I put the transmission in 5th if I had those switched around? I have an extra transmission complete with sensors so I'll mess around with that one.
I was guessing that switching the wires wouldn't help, but wouldn't the lights turn off when I put the transmission in 5th if I had those switched around? I have an extra transmission complete with sensors so I'll mess around with that one.
#6
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
Looking on the "battery" harness (actually called the Engine harness) won't help coz it's not there.
It comes out of the Front harness underneath the battery tray. It's two wires taped togther ending in two bullet connectors.
It comes out of the Front harness underneath the battery tray. It's two wires taped togther ending in two bullet connectors.
Thread
Thread Starter
Forum
Replies
Last Post
immanuel__7
2nd Generation Specific (1986-1992)
89
09-05-15 10:23 AM
befarrer
Microtech
3
08-22-15 05:52 PM