I’m having trouble getting my turn signals, check engine light, and obd2 port to work. there’s two connectors under the dash that aren’t plugged into anything but i can’t find what they go to

i don’t have any of the headlights connected but the blinkers should still come on on the dash and in the rear, right? my windshield wipers aren’t working right either. i swapped the wiper and turn signal switch but it was off a old steering column. could they both be bad? i don’t have the airbag on the steering wheel either the connectors are hanging. and i don’t even know where to start on the obd2 port besides it gets no power. please help thanks.

 

We need a lot more info to help you out. What year are you working on? Did you buy it this way, or have you just been disconnecting things and pulling stuff out? How did it get to this state?

 

I have a 99 ranger and when I got it it had no dash and I’ve put a dash in and a steering column from a 98 ranger. I have been trying to put stuff in the right spot and the truck is good besides these problems. I hope that’s enough info please help thanks.

 

What is the dash out of? The cluster could be wired different. The obd as well. You walked into a headache, but with time you can get it worked out, but it's going to take time and patience. Doing a frank n stein truck is not fun. I'll do some research and see what I come up with.

 

I sent a message but I’m not sure it sent but the dash is from a 2001 and the wiring is stock 99 wiring. The steering column is a 98

 

Could this not being hooked up affect those things? Also how am i supposed to connect this

 

Well I think I wired the cig lighter right but now the wipers are being even weirder they are going in all sorts of random intervals

 

now none of it is working cant even get the wipers to do the random stuff now

 

I'm thinking the cig lighter isn't too important. Power to the center post, ground to the outside casing. I wish there was a simple answer for the issues your having, but you have a few mixed years in that beast, and wiring did change some over those years. The wipers are probably reacting to the multi switch and if it's possible, hook your original switch back in and see if they will function right.

 

ok i will but it was doing this with the old switch im thinking both could possibly be bad

 

there is also a random ground wire going to nothing on my steering column there is the same random ground going nowhere on the old column

 

So the two connectors and that ground wire are all for the airbag and cruise control assembly that I don’t have on my truck so what could my issues be. I’ve replaced the hazard and flasher relay, I haven’t replaced the multifunction switch but I have two used ones and there’s no way both of them could be bad right? And also what’s causing my obd2 port and check engine light to not work? If anyone has wiring diagrams for these please lmk I have a 1999 ford ranger with a 3.0 v6 and a 5 speed manual.

 

No, I doubt both switches are bad. Is the OB2 the original or did you splice that in too? Your going to have a ton of wire testing to do to work these bugs out. I don't believe any of it will be plug and play. Can you manually wire the turn signal relay to test it from there and get the turns to work? It's so hard to direct you when I'm a hands on mechanic. For now if you can get the main functions working, than you can just tinker over time to get the rest going. I'm thinking there were reasons you got this truck in the conditions you did and your fighting somebody else's demons here.

 

yeah the obd2 isnt messed with but this truck needs a lot for sure it was stripped down for a prerunner build but sat and ive spent forever putting it together. any info or things to try helps.

 

Ok, I'll help how I can. All makes sense now, knowing it was a project truck. You restoring it makes it fun. My guess on the OB2 is that the previous owner either cut into the wires someplace or possibly rerouted a wire from it for his own purpose. Try following the harness wires and look for splices anywhere. I'm going to look at the wiper motor for your year. I know mines was acting up a few years ago and ended up being a bad circuit board in the motor.

 

i looked earlier and couldnt find anything im fearing that ill probably have to take the dash out again to get a better look

 

The OBD II fuse is located in the central junction box, which is behind the left side of the dashboard. It is a 25 amp fuse and is labeled #17. This is the same from 1998-2000 I believe.

 

Here is a picture

 

I’ve looked and replaced every fuse on that

 

Do an anti theft reset

i lost radio- door locks and wipers, just did an anti theft reset and got wipers and door locks back. Forgot to check radio

get in, close doors. Turn key to on but don’t start. Turn off. Repeat 8 x

then start

 

will do because the theft light flashes until a few seconds after I turn the truck on

 

well it didn’t change anything thanks for the tip though