What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Went to quad lights need some help.

stoney126

stoney126

1/2 ton status
Joined
Jun 2, 2005
Posts
1,458
Reaction score
0
Location
napa,CA
Hey all. I put the quad lights(89-91) on my 84 blazer. First I think the person I got the core support from switched the light or I did and forgot but they seem to backwards:o Highbeams are on the outside right now.

The big issue right now is that the passanger side barely lights up for high or low beam. Diver side is fine. Though when the high beams are on you can seea lil bit of light from the low beams, not alot but there is still power going to them. The ground Im using for the pass. side goes the radiator support then to the frame. The groundat on the support is sharing the spot with a ground that goes to the battery.

Thanks for any info
 
Ok I disconnected the ground on the pass side and it didnt effect anything. No voltmeter(dont know how to use it anyway) so I cant tell what voltage im getting. I should mention I spliced the pigtails from the 89-91 stuff to the 84 harness.
 
Last edited:
If you have to wire it up, why not improve and do the relay mod, rather than trying to troubleshoot the crappy stock wiring?
 
If it's dim then it sounds like you have a bad ground. Clean the area when you are grounding so you see bare metal. In addition, the bolts that hold the radiator support to the frame etc. also need to be clean.
 
dhcomp said:
If you have to wire it up, why not improve and do the relay mod, rather than trying to troubleshoot the crappy stock wiring?
Click to expand...


In due time. Im pretty strapped for cash atm. Ill clean and check all the grounds
 
Several years ago I converted my 1981 Chevy to quad headlights. There is a few things you should do, clean corrosion from headlight prongs and and their plug. Spray some WD-40 on both the headlight pin and plug ( the small pins get hot and tend to corrode, this prevents the full voltage from getting to the lights. The next thing would be to hook up two relays, one for the regular headlights and one for the brights. The wiring is easy, just use the current headlight wires to turn the relay on/off and run new, heavier 12 guages, wires from the + battery post ( along with an in-line 30 amp fuse ) to the relay ( labeled 30 ). Plug two wires on connection labeled 87 and run one wire to each light. The other headlight wire ( also use 12 guage wire ) goes to a ground.
The relays you need to purchase are called accessory relays and should be rated at 30 amps.
The big deal about the relays is because the quad lights take more amps than standard headlights and put greater load on your headlight switch. I had to replace my headlight switch once a year for three years until I added the relays. Six more years have passed and everything works perfect. The relays have changed the load on the headlight switch from 20-30 amps to 0.2 amps.
If you feel reluctant to do thewiring offer a friend who is more comfortable with wiring a couple beers to do the job. From start to finish it should take no more than 30 minutes including time to drink the beers. You will be satisfied with the results.
 
First, we need to find out if it is a ground problem. 99% of the time it is, so that is where everybody goes when trying to help.
Find the ground wire for the headlights on that side. Get a piece of wire, 12 ga or better.
Jumper cable if that is all you have.
Hook one end to the neg. terminal of the battery, hook the other end to the ground for those lights as close to the lights as you can.
Also examine the ground wire for them closely for bad connections, etc. If the lights are nice and bright with the temp ground cable, then you have found the problem. All you have to do now is figure out why you are not getting a good ground.
If not, then you are not getting a good positive hookup.

Hook the original ground back up, move the temp wire over to the positive post.
BE CAREFUL at this point since you have an unfused hot lead that is just itching to find a ground and cause trouble.

Touch the wire to the power input for the bulbs. If it lights up then, probably best to save up for the relay kit.
In the meantime, look for corrosion or other bad connections on the hot side.

J.
 
If the headlights worked before the conversion, you spliced the wires together and now the headlights don't work.... it's not because it needs realays, it's because you wired it wrong.

From your description, it sounds like you wired the two passenger lights in series. If you unplug the high beam and the low beam stops lighting "a lil bit", then this is confirmed. Try comparing what you did on the two sides. Save yourself some grief and at least get a test light to see which wire is what.
 
Ok Ill really give the grounds good cleaning and ill check the ground. I do have test light, and tested at the pig tails. I got power but ill double check. Also Ill check for corrosion at the prongs
 
So I guess I did wire them in series, but I did it on both sides. Is it because I have Both the high beam and low sharing the same ground? Also can I wire each light for its own ground to the chassis?
 
Ok got it fixed and all lights working. I havent hooked up running lights yet but I got H/L beams and turn signals. It ended up being what I thought was a ground. Gonna get the relay when I can aprobally redo all the wires to make it cleaner.

BTW getting the lights straight isnt there a x on the garage door trick?
 
You must log in or register to reply here.

Latest Posts

Top Bottom