Fuses
Author
Discussion

MHunter

Original Poster:

125 posts

220 months

Monday 18th May 2009
quotequote all
Can someone give me the correct fuses amps? I keep blowing up one of the fuses (second from the left, but my left may be different from your left smile ), apparently when I start the windshield wiper. I had a 10 amp in there, I replaced it with a 30 amp to test, and it blew that one too.

Thanks,
MHunter

spatz

1,783 posts

215 months

Monday 18th May 2009
quotequote all
sounds like it is not connected in the right way, check your wiring !

Steve_D

13,802 posts

287 months

Monday 18th May 2009
quotequote all
Something is very wrong in there to blow a 30amp fuse. None of the wires coming away from that fuse are rated anywhere near 30amp.

Fuse 2 (10amp) powers....
Radiator thermostat
Wiper motor park function.
Choke (if fitted)
Brake lights

It is an ignition switched supply so I would start by working through the car finding out what is not working with that fuse blown/removed (with ign on) and see what is connected which should not be.

Steve

60mph

254 posts

214 months

Monday 18th May 2009
quotequote all
Also perhaps a short on that fuse line due to a faulty part or wiring .

Frank

MHunter

Original Poster:

125 posts

220 months

Tuesday 19th May 2009
quotequote all
I did find a few mistakes in the wiring loom when I was building the car. Apparently I didn't find them all. Following wires all tucked in under the dash sounds like a lot of fun. Oh well, not like I can take the car on the road anyway, it is freaking snowing here right now.

Steve_D

13,802 posts

287 months

Tuesday 19th May 2009
quotequote all
I take it the car has been working OK and this has developed?

Have you changed anything like fitting control stalks?
If not and you say this is related to the wipers then the wiper motor or the wiper switch are your likely culprits.
Does it blow when you switch the wipers on or when they go off?

Steve

GTRCLIVE

4,193 posts

312 months

Tuesday 19th May 2009
quotequote all
Have you been referencing the Wiring diagram I posted ??

MHunter

Original Poster:

125 posts

220 months

Tuesday 19th May 2009
quotequote all
The car seemed to work ok until I finally got the wipers working. 2 of the wires in the 5 wires connector for the wiper motor were reversed in the wiring loom, from the factory. Then the wipers started working, and the fuse blew.

I will definitely use the invaluable wiring diagram that gtrclive made. Hopefully it won't take too long to figure out.

MHunter

Original Poster:

125 posts

220 months

Sunday 24th May 2009
quotequote all
I finally found some free time and looked at the wiring again. I found that wires 53a and 53e of the wiper motor connector were inverted. that was blowing up the fuse. I also found that the first high beam relay had one of the white/blue wires connected in the wrong hole. That's why the high beams weren't working.

Finally, the radiator therm switch had a black/orange wire and a *green* wire, instead of a black wire. I tested the green wire and it is at 12v. I imagine it's not too good to replace a ground with a +12v... Not my mistake though, there isn`t any black wire in the loom anywhere near the therm switch black/orange. I'll have to add one.

Steve_D

13,802 posts

287 months

Monday 25th May 2009
quotequote all
MHunter said:
Finally, the radiator therm switch had a black/orange wire and a *green* wire, instead of a black wire. I tested the green wire and it is at 12v. I imagine it's not too good to replace a ground with a +12v... Not my mistake though, there isn`t any black wire in the loom anywhere near the therm switch black/orange. I'll have to add one.
Green is correct.
There is an error in the Factory wiring notes.

Steve

MHunter

Original Poster:

125 posts

220 months

Monday 25th May 2009
quotequote all
oh, good. thanks for letting me know. GTRCLIVE's wiring diagram also shows a black wire. Well, I think all the wiring woes are gone now!

1 step closer to being officially road legal.

MH